Tìm x :
a, 5( x + 35 ) = 515
b, 96 - 3( x + 1 ) = 42
c, 12x - 33 = 32 . 33
a) 5(x+35)=515
b) 12x-33=3².3³
c) 6.x-5=19
d) 4.(x-12)+9=17
e) 123-5.(x+4)=38
f) (3x-2⁴).7³=2.7⁴
`@` `\text {Ans}`
`\downarrow`
`a)`
`5(x + 35) = 515`
`=> x + 35 = 515 \div 5`
`=> x+ 35 = 103`
`=> x = 103 - 35`
`=> x = 68`
Vậy, `x = 68`
`b)`
`12x - 33 = 3^2 * 3^3`
`=> 12x - 33 = 3^5`
`=> 12x = 3^5 + 33`
`=> 12x = 276`
`=> x = 276 \div 12`
`=> x = 23`
Vậy, `x = 23`
`c)`
`6x - 5 = 19`
`=> 6x = 19 + 5`
`=> 6x = 24`
`=> x = 24 \div 6`
`=> x = 4`
Vậy, `x = 4`
`d)`
`4(x - 12) + 9 = 17`
`=> 4(x - 12) = 17 - 9`
`=> 4(x - 12) = 8`
`=> x - 12 = 8 \div 4`
`=> x - 12 = 2`
`=> x = 14`
Vậy, `x = 14`
`e)`
123 - 5(x + 4) = 38`
`=> 5(x + 4)= 123 - 38`
`=> 5(x + 4) =85`
`=> x + 4 = 85 \div 5`
`=> x + 4 = 17`
`=> x = 13`
Vậy, `x = 13`
`f)`
`(3x - 2^4) * 7^3 = 2 * 7^4`
`=> 3x - 2^4 = 2 * 7^4 \div 7^3`
`=> 3x - 2^4 = 2* 7`
`=> 3x - 2^4 = 14`
`=> 3x = 14 + 2^4`
`=> 3x = 30`
`=> x = 30 \div 3`
`=> x = 10`
Vậy, `x = 10.`
Tìm x biết :
a. 5 (x +35) = 515
b. 96 - 3(x + 1) = 49
c. 12x -33 =32.33
a) 5 ( x + 35 ) = 515
x + 35 = 103
x = 68
b) 96 - 3(x+1) = 49
3(x+1) = 47
x + 1 = 47/3
x = 44/3
c) 12x - 33 = 3^2 * 3^3
12x - 33 = 243
12x = 276
x = 23
5 ( x + 35 ) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
96 - 3( x + 1 ) = 49
3( x + 1 ) = 96 - 49
3( x + 1 ) = 47
x + 1 = 47/3
x = 47/3 - 1
x = 44/3
12x - 33 = 32 . 33
12x - 33 = 35
12x - 33 = 243
12x = 243 + 33
12x = 276
x = 276 : 12
x = 23
\(a.5\cdot\left(x+35\right)=515\)
\(x+35=515:5\)
\(x+35=103\)
\(x=103-35\)
x=68
\(b.96-3\left(x+1\right)=49\)
\(3\left(x+1\right)=96-49\)
\(3\left(x+1\right)=47\)
\(x+1=\frac{47}{3}\)
\(x=\frac{47}{3}-1\)
\(x=\frac{44}{3}\)
\(c.12x-33=3^2\cdot3^3\)
\(12x-33=243\)
\(12x=243+33\)
\(12x=276\)
\(x=276:12\)
\(x=23\)
Tìm x
A 54+(218-x)=735
B 96-3(x+1)=42
C 5(x+35)=515
D 12x-33=3^2.3^2
a) 54 + ( 218 - x ) = 735
218 - x = 735 - 34
218 - x = 701
x = 218 - 701
x = -483
b) 96 - 3 ( x + 1 ) = 42
3 ( x + 1 ) = 96 - 42
3 ( x + 1 ) = 54
x + 1 = 54 : 3
x + 1 = 18
x = 18 - 1
x = 17
c) 5 ( x + 35 ) 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
d) 12x - 33 = 32 . 32
12x - 33 = 9.9
12x - 33 = 81
12x = 81 + 33
12x = 114
x = 114 : 12
x = 9,5
a) 54+(218-x)=735
218-x=681
x=-463
b) 96-3(x+1)=42
3(x+1)=54
x+1=18
x=17
c) 5(x+35)=515
x+35=103
x=68
d) 12x-33=3^2.2^2
12x-33=81
12x = 114
x=9,5
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thế cũng hỏi sao
k mk nha
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Tìm số tự nhiên x, biết:
a. 541 + ( 218 - x ) = 735
b. 5(x + 35) = 515
c. 96 - 3(x + 1) = 42
d. 12x - 33 = 3^2 . 3^3
a, 541 + (218 - x) = 735
218 - x = 735 - 541
218 - x = 194
x = 218 - 194
x = 24
Vậy x = 24
b, 5(x + 35) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
Vậy x = 68
c, 96 - 3(x + 1) = 42
3(x + 1) = 96 - 42
3(x + 1) = 54
x + 1 = 54 : 3
x + 1 = 18
x = 18 - 1 = 17
Vậy x = 17
d, 12x - 33 = 32 . 33
12x - 33 = 35
12x - 33 = 243
12x = 243 + 33
12x = 276
x = 276 : 12
x = 23
Vậy x = 23
Ủng hộ mk nha !!! ^_^
a. 541 + ( 281 - x ) = 735
( 281 - x ) = 735 - 541
( 281 - x ) = 194
x = 281 - 194
x = 87
b. 5(x + 35) = 515
( x + 35 ) = 515 : 5
( x + 35 ) = 103
x = 103 - 35
x = 68
Các phần còn lại bạn làm tương tự nhé
Tìm số tự nhiên x biết :
a) 541 + ( 281 - x ) =735
b) 5.(x+35) = 515
c) 96 - 3.( 9x+1) =42
d) 12x - 33 = 3 mũ 2 . 3 mũ 3
a) 541 + ( 281 - x ) =735
=>281-x=735-541
=>281-x=194
=>x=87
b)5.(x+35) = 515
=>x+35=515:5
=>x+35=103
=>x=68
c)96 - 3.( 9x+1) =42
=>3(9x+1)=96-42
=>3(9x+1)=54
=>9x+1=18
=>9x=17
=>x=17/9
d)12x-33=32*33
=>12x-33=9*27
=>12x-33=243
=>12x=276
=>x=23
a) \(541+\left(281-x\right)=735\)
\(\Rightarrow281-x=735-541\)
\(\Rightarrow x=281-194\)
\(\Rightarrow x=87\)
b) \(5\cdot\left(x+35\right)=515\)
\(\Rightarrow x+35=515:5\)
\(\Rightarrow x=103-35\)
\(\Rightarrow x=68\)
c) \(96-3\cdot\left(9x+1\right)=42\)
\(\Rightarrow3\cdot\left(9x+1\right)=96-42\)
\(\Rightarrow9x+1=54:3\)
\(\Rightarrow9x=18-1\)
\(\Rightarrow x=17:9\)
\(\Rightarrow x=\frac{17}{9}\)
d) \(12x-33=3^2\cdot3^3\)
\(=12x-33=243\)
\(\Rightarrow12x=243+33\)
\(\Rightarrow x=276:12\)
\(\Rightarrow x=23\)
Tìm số tự nhiên x,biết:
a) 541+(218-x)=735
b)5(x+35)=515
c)96-3(x+1)=42
d)12x -33=32.33
c)96-3(x+1)=42
3(x+1)=96-42
3(x-1)=54
(x+1)=54:3
(x+1)=18
x=18-1
x=17
a, 541 + [218 - x] = 735
[ 218 - x ] = 735 - 541
[ 218 - x ] = 194
218 - x = 194
= 218 - 194
=24
1.tim x:
a, 96-3(x+1)=42
b, 5(x+35)=515
c, 12x-33=3 mu 2 nhan 3 mu 3
a, 96-3(x+1)= 42
3(x+1) = 96-42
3(x+1) = 54
x+1 = 54:3
x+1= 18
x = 18-1
x = 17
b, 5(x+35) = 515
x+35 = 515:5
x+35 = 103
x = 103-35
x = 68
c, 12x-33=32.33
12x-33= 35
12x-33=243
12x=243+33
12x= 276
x = 276:12
x = 23
Tìm số tự nhiên x biết:
a) 541 + (218 - x) = 735.
b) 5(x + 35) = 515.
c) 96 - 3(x + 1) = 42.
d) 12x - 33 = 32 * 33.
a) 541 + ( 218 - x ) = 735
218 - x = 194
x = 24
b) 5 ( x + 35 ) = 515
x + 35 = 103
x = 68
c) 96 - 3 ( x + 1 ) = 42
3 ( x + 1 ) = 54
x + 1 = 18
x = 17
d ) 12x - 33 = 3 2 * 3 3
12x - 33 = 243
12x = 276
x = 23
a) 541 + (218 - x) = 735
218 - x = 735 - 541
218 - x = 194
x = 218 - 194
x = 24
5(x + 35) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
Tìm số tự nhiên x, biết :
a/ 541 + ( 218 - x ) = 735
b/ 5 ( x + 35 ) = 515
c/ 96 - 3 ( x + 1 ) = 42
d/ 12x - 33 = 32 . 33
câu hỏi tương tự nha bạn **** mình nha bạn Thiên Tỷ.
a; 218-x=735-541
218-x=194
x=218-194
x=24
b; x+35=515/5
x+35=103
x=103-35
x=68
c;3*(x+1)=96-42
3*(x+1)=54
x+1=54/3
x+1=18
x=18-1
x=17
d;12x-33=243
12x=243+33
12x=276
x=276/12
x=23
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