Question

(4x-4xr)-(ry-y)

how do i simplify this? for my answer, i got 4x(-r)-y(-r) but i'm not sure if this is right or not.

Answer 1

how about this:
(4x - 4xr) - (ry -y)
4x(1-r) - y(r-1) (factor out 4x from the first paren, factor y out of the 2nd)
4x(1-r) + y(1-r) (distribute the -1: y* -1*(r-1) -> y(-r+1) = y(1-r)
(4x +y)(1-r) (factor out the (1-r)

Answer 2

thank you :D