Question

Make x the subject of the formula 3x + a = b(x+5)

Answer 1

x=
`(5b-a)/(3-b)`

Explanation:

3x+a=b(x+5)

3x+a=bx+5b

3x-bx=5b-a

x(3-b)=5b-a

x=
`(5b-a)/(3-b)`