Question

140:(x-8)=7

Answer 1

140:(x-8)=7

x-8=140:7

x-8=20

x=20+8

x=28

Answer 2

140:(x-8)=7

x-8=140:7

x-8=20

   x=20+8

   x=28

Answer 3

140:(x-8)=7

=>x-8=140:7

=>x-8=20

=>x=20+8

=>x=28

Vậy x=28