Question

Tìm x

2x + 12 = 3( x - 7 )

ai nhanh nhất mk tick

Answer 1

2x+ 12= 3( x- 7).

2x+ 12= 3x- 21.

2x- 3x=- 21- 12.

- x=- 33.

=> x= 33.

Vậy x= 33.

Answer 2

2x+12=3(x-7)
2x+12=3x-21
2x-3x=-21-12
-x=-33
=> x=33 

p/s: kham khảo

Answer 3

\(2x+12=3\left(x-7\right)\)

\(2x+12=3x-21\)

\(2x-3x=-21-12\)

\(-x=-33\)

\(x=33\)

vậy \(x=33\)

Answer 4

2x + 12 = 3(x - 7)

2x + 12 = 3x - 21

12 + 21 = 3x-2x

33 = x

Answer 5

2x + 12 = 3( x - 7 )

2x + 12 = 3x - 21

2x - 3x = -21 - 12

- x = -33

Vậy x = 33