1, 201415.(2.x-60)=201416
2, 134:(x-3)=35+160÷5
a, 201415.(2.x - 60) =201416
b, x+18÷32=5.42
C,7.(42 - x)=53+134
Giúp tớ nhanh vs ạ
`#3107.101107`
a,
$2014^{15} . (2x - 60) = 2014^{16}$
$\Rightarrow 2x - 60 = 2014^{16} \div 2014^{15}$
$\Rightarrow 2x - 60 = 2014$
$\Rightarrow 2x = 2074$
$\Rightarrow x = 1037$
Vậy, `x = 1037`
b,
`x + 18 \div 3^2 = 5.4^2`
`\Rightarrow x + 18 \div 9 = 5.16`
`\Rightarrow x + 9 = 80`
`\Rightarrow x = 80 - 9`
`\Rightarrow x = 71`
Vậy, `x = 71`
c,
`7.(42 - x) = 5^3 + 134`
`\Rightarrow 7.(42 - x) = 125 + 134`
`\Rightarrow 7(42 - x) = 259`
`\Rightarrow 42 - x = 259 \div 7`
`\Rightarrow 42 - x = 37`
`\Rightarrow x = 42 - 37`
`\Rightarrow x = 5`
Vậy, `x = 5.`
tìm x
a,134:(x-3)=35+160:5
b,[(10-x).2+]:3-2=3
tl nhớ kb vs mk na
a, 134: [x-3] = 35 + 160: 5
134 : [x-3] = 35 + 32
134 : [x-3] = 67
x - 3 = 134: 67
x-3 = 2
x = 2 + 3
x = 5
Bài b bạn ghi lại đề nha
a,134:(x-3)=35+160:5
=> 134:(x-3)=35+32
=> 134:(x-3)= 67
=> x - 3 = 134 : 67
=> x-3 = 2
=> x = 2 + 3 = 5
b,[(10-x).2]:3-2=3
=> [(10-x).2]:3 = 3+2
=> [(10-x).2]:3 = 5
=> (10 -x) . 2 = 5.3
=> (10 - x).2 = 15
=> 10-x = 15: 2
=> 10 - x =7,5
=> x = 10 - 7,5 = 2,5
a,134:(x-3)=35+160:5
134:(x-3)=35+32
134:(x-3)=67
(x-3)=134:67
x-3 =2
x =2+3
x =5
b,[(10-x).2+]:3-2=3
[(10-x).2+]:3=3+2
[(10-x).2+]:3=5
(10-x).2+=5.3
(10-x).2+=15
(10-x) =15:2
10-x=7,4
x=10-7,4
x=2,6
giup minh voi cac ban :
1timx
5^x-2-3^2=2^4-(2^8.2^4-2^10.2^2)
697:[(15^x+364):x]=17
134:(x-3)=35+160:5
(3.x-2^4).7^3=2.7^4
[(10-x) .2+5]:3-2=3
2 tim x thuoc N
cau a : n+5chia het n +1
cau b :2.n +7 chia het cho n-2
Lúc bạn hỏi, bạn đang bằng tuổi tôi đấy. Còn giờ...
bai1
a) 5X-2-32=24-( 28 .24-210.22) =
b)697 :[ ( 15 .x+ 64) :x]=17
c) 134: ( x-3 )= 35+ 160:5
d) ( 3. x - 24) .73-2.74
e) [(10-x).2-5 ] : 3-2=3
a) 5X-2-32=24-( 28 .24-210.22)
5X-2-9=16-( 28+4-210+2)
5X-2-9=16-( 212-212)
5X-2-9=16-0
5X-2-9=16
5X-2=16+9
5X-2=25
5X-2=52
=>x-2=2
x=2+2
x=4
b)697 :[ ( 15 .x+ 64) :x]=17
k biết
c) 134: ( x-3 )= 35+ 160:5
134: ( x-3 )= 35+32
134: ( x-3 )= 67
x-3=134:67
x-3=2
x=2+3
x=5
d) ( 3. x - 24) .73-2.74
đề thiếu
e) [(10-x).2-5 ] : 3-2=3
[(10-x).2-5 ] : 3=3+2
[(10-x).2-5 ] : 3=5
(10-x).2-5=5x3
(10-x).2-5=15
(10-x).2=15+5
(10-x).2=20
10-x=20:2
10-x=10
x=10-10
x=0
Dãy số có 2 chữ số chia hết cho 3 là:[12,15,....,99]
Khoảng cách của từng số hạng là 3
Số số hạng là: (99-12):3+1=30(số)
Vậy có 30 số có 2 chữ số chia hết cho 3
134 - (y-3) = 35 + 160 : 5
\(134-\left(y-3\right)=35+160:5\)
\(\Rightarrow134-\left(y-3\right)=35+32\)
\(\Rightarrow134-\left(y-3\right)=67\)
\(\Rightarrow y-3=134-67\)
\(\Rightarrow y-3=67\)
\(\Rightarrow y=67+3\)
\(\Rightarrow y=70\)
`134-(y-3)=35+160:5`
`=>134-(y-3)=35+32`
`=>y-3=134-(35+32)`
`=>y-3=134-67`
`=>y-3=67`
`=>y=70`
Vậy `x\in{70}`
a) 5x - 2 - 32 = 24 - ( 28 . 24 - 210 . 22 )
b) 697 : [( 15x + 364 ) : x ] = 17
c) 134 : ( x - 3 ) = 35 + 160 : 5
d) ( 3x - 24 ) : 73 = 2 . 74
e) [( 10 - x ) : 2 + 5 ] : 3 - 2 = 3
c) 134 : ( x - 3 ) = 35 + 160 : 5
<=> 134 : ( x - 3 ) = 67
<=> x - 3 = 134 : 67
<=> x - 3 = 2
<=> x = 2 + 3
<=> x = 5
c) 134 : ( x - 3 ) = 35 + 160 : 5
134 : ( x - 3 ) = 35 + 32
134 : ( x - 3 ) = 67
( x - 3 ) = 134 : 67
x - 3 = 2
x = 2 + 3
x = 5
Tìm x
\(134\div\left(x-3\right)=35+160\div5\)
\(134\div\left(x-3\right)=35+160\div5\)
\(134\div\left(x-3\right)=35+32\)
\(134\div\left(x-3\right)=67\)
\(x-3=134\div67\)
\(x-3=2\)
\(x=3+2\)
\(x=5\)
hok tốt
134 : (x - 3) = 35 + 160 : 5
134 : (x - 3) = 35 + 32
134 : (x - 3) = 67
x - 3 = 134 : 67
x - 3 = 2
x = 2 +3
x = 5
Chúc bạn học tốt!
tìm số tự nhiên x , biết
a, (x-5):5+22=24
b,42-(2x+32)+12:2=6
c,134-2.{156-6.[54-2.(9+b)]}
d,(2x+35)-60=121
ai biết được mình tick cho,dấu chấm là dấu nhân nhé
a)(x-5):5+22=24
(x-5):5=2
(x-5)=10
x=15
b)42-(2x+32)+12:2=6
42-(2x+32)+6=6
42-(2x+32)=0
(2x+32)=42
2x=10
x=5
a, (x-5):5+22=24 b, 42-(2x+32)+12:2=6
(x-5):5=2 42-(2x+32)=0
x-5=10 2x+32=42
x=15 x=5
d, (2x+35)-60=121 câu c không có vế để tính
2x+35=181
2x=146
x=73
2^3.19-2^3.14+1^2020
10^2-[60:(5^6:5^4-3.5)]
160:{17+[3^2.5-(14=2^7:2^4)]}
798+100:[16-2(5^2022)]
t^2+5t-6 khi t=2
(a+b)^2-(b-a)^3+2012 khi a=5;b=a+1
x^3-3x^2y=3xy^2-y^3 khi x=3;y=2
23.19 - 23.14 + 12020
= 23.(19 - 14) + 1
= 8.5 + 1
= 41
102 - [60: (56: 54 - 3.5)]
= 100 - [60: (52 - 15)]
= 100 - [60: (25 - 15)]
= 100 - [60 : 10]
= 100 - 6
= 94
160: {17 + [32.5 - ( 14 + 27:24)]}
= 160: {17 + [9.5 - (14 + 23)]}
= 160: {17 + [45 - (14 + 8)]}
= 160: {17 + [45 - 22]}
= 160: {17 + 23}
= 160 : 40
= 4