Question

What does y= 4x+rx+6 equal? (Solve for x)

Answer 1

minus 6 both sides
y-6=4x+rx
undistribute x
y-6=x(4+r)
dividie both sides by (4+r)
$\frac{y-6}{4+r}=x$
$x=\frac{y-6}{r+4}$