Question

x=3g+2
how do i make g the subject?

Answer 1

3g = x - 2
g = (x - 2)/3

Answer 2

x=3g+2
subtract 2 from both sides. 2 cancels 3
x-2=3g
divide by 3 both sides. 3 cancels 3
(x-2)/3=g
there you go
g=(f-2)/3