Question

ajuda pfvr - x + 40 = 4 x ​

Answer 1

- x + 40 = 4 x
40 = 4 x + x
40 = 5 x
40/5 = x
8 = x

Answer 2

-x + 40= 4x

-x - 4x= -40

-5x= -40

x= -40/ -5

x= 8