Những câu hỏi liên quan
541+(218-x)=735
12.x-33=3^2.3^3
231-(x-6)=1339:13
2.x-138=2^3.3^2
2^x.4=128
x^5=x
2.(3+3^2+3^3+...+3^100)+3=3^2
a) 541+ ( 218 - x ) = 735
218 - x = 735 - 541
218 - x = 194
x= 218 - 194
x= 24
b) 12 . x - 33 = 32 . 33
12 . x - 33 = 9 . 27
12 . x - 33 = 243
12 . x = 243 + 33
12 . x = 276
x = 276 : 12
x = 23
c) 231 - ( x-6 ) = 1339 : 13
231 - ( x- 6) = 103
x- 6 = 231- 103
x-6 = 128
x= 128 + 6
x = 134
CHÚC BN HỌC GIỎI ;)
Bài làm :
\(a,541+\left(218-x\right)=735\)
\(218-x=735-541\)
\(218-x=194\)
\(x=218-194\)
\(x=24\)
\(b,12.x-33=3^2.3^3\)
\(12x=243+33\)
\(12x=276\)
\(x=23\)
\(c,231-\left(x-6\right)=1339:13\)
\(x-6=231-103\)
\(x-6=128\)
\(x=134\)
\(d,2.x-138=2^3.3^2\)
\(2x-138=72\)
\(2x=72+138\)
\(2x=210\)
\(x=105\)
\(e,2^x.4=128\)
\(2^x=128:4\)
\(2^x=32\)
\(2^x=2^5\)
\(\Rightarrow x=5\)
\(g,x^5=x\)
\(\Rightarrow\orbr{\begin{cases}x=0\\x=1\end{cases}}\)
Học tốt
Tìm x , biết
a) 2.x-138=2^3.3^2
b) ( 3.x-2^4) .7^2=2.7^4
a ) 2x - 138 = 2 ^ 3 . 3 ^ 2
2x - 138 = 8 . 9
2x - 138 = 72
2x = 210
x = 105
b ) ( 3x - 2 ^ 4 ) . 7 ^ 2 = 2 . 7 ^ 4
( 3x - 16 ) . 49 = 4802
( 3x - 16 ) = 98
3x = 114
x = 38
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2^2.4^4.2^6.2.22.2^3.2^7.2^43^2.33^4.3^3.33.3^5.3^4.3^23.3^6.3^7.3^44.4^34^5.4.4^74.4^3.4^5.4^65.5^65.5^45.5^2.5^45.5^3.5^4.5^65.5^6.5^4.5^3x.x^2x.x^3.x^5a.a^4a.a^2.a^4.a^5.a^7a.a^3.a^5.a^6a^4.a.a^5.a^6.ax.x^3.x^4x^5.x^4.x.x^7.x^67.7^27.7^2.7^4.7^57^3.7^5.7.7^47^2.7.7^6.7^6.7^310.10^210.10^210.100.10^310.100.10^4.100010^2.10^4.100.1000
Đọc tiếp
2^2.4^4.2^6.2.2=
2.2^3.2^7.2^4=
3^2.3=
3^4.3^3.3=
3.3^5.3^4.3^2=
3.3^6.3^7.3^4=
4.4^3=
4^5.4.4^7=
4.4^3.4^5.4^6=
5.5^6
5.5^4=
5.5^2.5^4=
5.5^3.5^4.5^6=
5.5^6.5^4.5^3=
x.x^2
x.x^3.x^5=
a.a^4
a.a^2.a^4.a^5.a^7=
a.a^3.a^5.a^6
a^4.a.a^5.a^6.a=
x.x^3.x^4=
x^5.x^4.x.x^7.x^6=
7.7^2=
7.7^2.7^4.7^5=
7^3.7^5.7.7^4=
7^2.7.7^6.7^6.7^3=
10.10^2=
10.10^2=
10.100.10^3=
10.100.10^4.1000=
10^2.10^4.100.1000=
làm ơn giúp mình ,bạn nào làm nhanh đúng mình chọn cho nhanh nha mọi người
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Bài làm
22.44.26.2.2=22.28.26.22=218
2.23.27.24=215
32.3=33=27
34.33.3=38
3.35.34.32=312
3.36.37.34=318
4.43=44
45.4.47=413
4.43.45.46=415
5.56=57
5.54=55
5.52.54=57
5.53.54.56=514
5.56.54.53=514
x.x2=x3
x.x3.x5=x9
a.a4=a5
a.a2.a4.a5.a7=a19
a.a3.a5.a6=a15
a.a4.a.a5.a6.a=a18
x.x3.x4=x8
x5.x4.x.x7.x6=x23
7.72=73
7.72.74.75=712
73.75.74.7=713
72.7.76.76.73=718
10.102=103
10.100.103=106
10.100.104.1000=1010
102.104.100.1000=1011
Tk nha !
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1) 5.2²+ (x+3)5² 6) 4³ - (x-2)5²
2) 2³+(x-3²) 5³-4³ 7) 3⁴+ (x+5)5.3²
3) 3.2 + (x+5²)10² 8) 2³.5 - (x+ 3²)10
4) 2⁶+(5+x) 3⁴ 9) 3³ - (x+2⁴)7
5) 5+(x + 3³) 2⁶ 10) 7² - (15+x)5.2²
Đọc tiếp
1) 5.2²+ (x+3)=5² 6) 4³ - (x-2)=5²
2) 2³+(x-3²)= 5³-4³ 7) 3⁴+ (x+5)=5.3²
3) 3.2 + (x+5²)=10² 8) 2³.5 - (x+ 3²)=10
4) 2⁶+(5+x)= 3⁴ 9) 3³ - (x+2⁴)=7
5) 5+(x + 3³)= 2⁶ 10) 7² - (15+x)=5.2²
1; 5.22 + (\(x\) + 3) = 52
5.4 + (\(x\) + 3) = 25
20 + (\(x\) + 3) = 25
\(x\) + 3 = 25 - 20
\(x+3\) = 5
\(x\) = 5 - 3
\(x\) = 2
Vậy \(x=2\)
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2; 23 + (\(x\) - 32) = 53 - 43
8 + (\(x\) - 9) = 125 - 64
8 + (\(x\) - 9) = 61
\(x\) - 9 = 61 - 8
\(x\) - 9 = 53
\(x\) = 53 + 9
\(x\) = 62
Vậy \(x\) = 62
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3; 3.2 + (\(x\) + 52) = 102
6 + (\(x\) + 25) = 100
\(x\) + 25 = 100 - 6
\(x\) + 25 = 94
\(x\) = 94 - 25
\(x\) = 69
Vậy \(x\) = 69
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Xem thêm câu trả lời
tim x
a,2x-138=2^3.3^2
b,20-[7.(x-3)+4]=2
c,[6x-39]*3.28=5628
a)2x-138=23.32
=>2x-138=72
=>2x =72+138
=>2x =210
=>x =210:2
=>x =105
b)20-[7(x-3)+4]=2
=>7(x-3)+4 =20-2
=>7(x-3)+4 =18
=>7(x-3) =18-4
=>7(x-3) =14
=>x-3 =14:7
=>x-3 =2
=>x =2+3
=>x =5
c)[6x-39].3.28=5628
=>[6x-39].3 =5628:28
=>[6x-39].3 =201
=>6x-39 =201:3
=>6x-39 =67
=>6x =67+39
=>6x =106
=>x =106:6
=>x =17,6
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a) \(2x-138=2^2.3^2\)
\(2x-138=4.9\)
\(2x-138=36\)
\(2x=36+138\)
\(2x=174\)
\(x=174:2\)
\(x=87\)
Vậy \(x=87\)
b) \(20-\left[7.\left(x+3\right)+4\right]=2\)
\(\left[7.\left(x+3\right)+4\right]=20-2\)
\(7.\left(x+3\right)+4=18\)
\(7.\left(x+3\right)=18-4\)
\(7.\left(x+3\right)=14\)
\(\left(x+3\right)=14:7\)
\(x+3=2\)
\(x=2-3\)
\(x=-1\)
Vậy \(x=-1\)
c) \(\left[6x-39\right].3.28=5628\)
\(\left[6x-39\right].84=5628\)
\(\left[6x-39\right]=5628:84\)
\(6x-39=67\)
\(6x=67+39\)
\(6x=106\)
\(x=106:6\)
\(x=\frac{53}{3}\)
Vậy \(x=\frac{53}{3}\)
Chúc bạn học tốt !!!
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2x-138=2^3.2^2
3^3+2^2-(6x-12)=1
x:(12^3/4^3)=27
2x-138=2^5
2x-138=32
2x=32+138
2x=170
x=85
câu 2
27+4-(6x-12)=1
27+4-6x+12=1
31-6x+12=1
43-6x=1
6x-=43-1=42
x=42:6=7
câu 3
x:\(\frac{\left(3\cdot4\right)^3}{4^3}\)=27
x:\(\frac{3^3\cdot4^3}{4^3}\)=27
x:3^3=27
x:27=27
x=27*27=729
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2x-138=2^5
2x=138+32
2x=170
x=85
3^3+2^2-6x+12=1
-6x+13+12=1
6x=24
x=4
x:(12^3/4^3)=27
x:3^3=27
x:27=27
x=729
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1) 2x-138=23.22
<=>2x-138 =8.4
<=>2x-198=32
<=>2x=230
<=>x=115
Vậy x=115
2) 33+22-(6x-12)=1
<=>9+4-6x+12=1
<=>-6x=1-12-4-9
<=>-6x=-24
<=>x=4
Vậy x=4
3) x:(123/43)=27
<=>x:\(\frac{4^3.3^3}{4^3}\)=27
<=>x:9=27
<=>x=243
Vậy x= 243
tìm số tự nhiên x biết
70-5.(x-3)=45 2.x-138=2^3.3^2
10+2.x=4^5:4^3 231-(x-6)=1339:13
a)=>5.(x-3)=70-45 b)=>2x-138=8.9 c)=>10+2x=4^2 d)=>231-(x-6)=103
=>5.(x-3)=25 =>2x=138+72 =>2x=16-10 => x-6=231-103
=>x-3=25:5 =>x=210:2 =>2x=6 =>x-6=128
=>x-3=5 =>x=105 =>x=3 =>x=128+6
=>x=8 =>x=134
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NÓI NHANH
a)x=8 b)x=105 c)x=3 d)x=134
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Tìm x biết
10 + 2 . x = 4⁵ : 4³
2 x - 6² : 18 = 3.2²
70 - 5 . ( x- 3 ) = 3.2
\(10+2\cdot x=4^5:4^3\)
\(\Rightarrow10+2\cdot x=4^{5-3}\)
\(\Rightarrow10+2\cdot x=4^2\)
\(\Rightarrow10+2\cdot x=16\)
\(\Rightarrow2\cdot x=16-10\)
\(\Rightarrow2\cdot x=6\)
\(\Rightarrow x=\dfrac{6}{2}=3\)
__________________
\(2\cdot x-6^2:18=3\cdot2^2\)
\(\Rightarrow2\cdot x-36:18=12\)
\(\Rightarrow2\cdot x-2=12\)
\(\Rightarrow2\cdot x=12+2\)
\(\Rightarrow2\cdot x=14\)
\(\Rightarrow x=\dfrac{14}{2}=7\)
_________________
\(70-5\cdot\left(x-3\right)=3\cdot2\)
\(\Rightarrow70-5\cdot\left(x-3\right)=6\)
\(\Rightarrow70-5x+15=6\)
\(\Rightarrow-5x+15=6-70\)
\(\Rightarrow-5x+15=64\)
\(\Rightarrow-5x=64-15\)
\(\Rightarrow-5x=49\)
\(\Rightarrow x=-\dfrac{49}{5}\)
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Tìm x
A) 2.x-23.32=138
B) (6.x-34).73=3.74
Ta có : (6x - 34) . 73 = 3.74
=> (6x - 34) = 3.7
=> (6x - 34) = 21
=> 6x - 81 = 21
=> 6x = 102
=> x = 17
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Ta thực hiện nhân trước 2.x-23.32=138 2.x-8.9=138 2.x-72=138 x=138+72 x=210 x=210:2 x=105
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