a/ x + 2x + 3x = 36
=> 6x = 36
=> x = 6
Vậy ..
b/ 7x - 2x - x = 24
=> 4x = 24
=> x = 6
Vậy ...
c/ (x : 5) - 10 = 5
=> x : 5 = 15
=> x = 75
Vậy ...
d/ 7. (x+3) = 49
=> x + 3 = 7
=> x = 4
Vậy ....
e/ (x - 5) . 4 = 32
=> x - 5 = 8
=> x = 13
Vậy. ..
g/ 7x - 3 = 25
=> 7x = 28
=> x = 4
Vậy ...
h/ 17 - (x :3) = 10
=> x : 3 = 17 - 10
=>x : 3 = 7
=> x = 21
Vậy ..
a) x + 2x + 3x = 36
=> 6x = 36
=> x = 6
b)7x - 2x - x = 24
=> 4x = 24
=> x = 6
c) (x : 5 ) - 10 = 5
=> x : 5 = 15
=> x = 3
d) 7 . ( x + 3 ) = 49
=> x + 3 = 7
=> x = 4
e) ( x - 5 ) . 4 =32
=> x - 5 = 8
=> x = 3
g) 7x - 3 = 25
=> 7x = 28
=> x = 4
h) 17 - ( x : 3 ) = 10
=> x : 3 = 7
=> x = 21
a) x + 2x + 3x = 36
=> 6x = 36 => x = 36 : 6 = 6.
b) 7x - 2x -x = 24
=> 4x = 24 => x = 24 : 4 = 6.
c)(x : 5) - 10 = 5
=> x : 5 = 5 + 10 = 15
=> x = 15 x 5 = 75.
d) 7. (x + 3) = 49
=> x + 3 = 49 : 7 = 7
=> x = 7 - 3 = 4.
e)(x - 5) . 4 = 32
=> x - 5 = 32 : 4 = 8
=> x = 8 + 5 = 13.
g) 7x - 3 = 25
=> 7x = 25 + 3 = 28 => x = 28 : 7 = 4
h) 17 - ( x : 3 ) = 10
=> x : 3 = 17 - 10 = 7
=> x = 7.3 = 21
a) x + 2x + 3x = 36
( 2 + 3 + 1 )x = 36
6x = 36
x = 36 : 6
x = 6
b) 7x - 2x - x = 24
( 7 - 2 - 1 )x = 24
4x = 24
x = 24 : 4
x = 6
c) ( x : 5 ) - 10 = 5
x : 5 = 5 + 10
x : 5 = 15
x = 15 . 5
x = 75
d) 7 . ( x + 3 ) = 49
x + 3 = 49 : 7
x + 3 = 7
x = 7 - 3
x = 4
e) ( x - 5 ) . 4 = 32
x - 5 = 32 : 4
x - 5 = 8
x = 8 - 5
x = 3
g) 7x - 3 = 25
7x = 25 + 3
7x = 28
x = 28 : 7
x = 4
h) 17 - ( x : 3 ) = 10
x : 3 = 17 - 10
x : 3 = 7
x = 7 . 3
x = 21
