Решите урав-е:3х-(х+17)=21

Question

Решите урав-е:3х-(х+17)=21

Answer 1

3х-(х+17)=21
2x-17=21
2x=21+17
2x=38
x=19

Answer 2

3х - (х + 17) = 21

3х - х - 17 = 21

2х = 21 + 17

2х = 38

х = 19