Question 70721
(x-9)/(x+4)=3  now cross multiply we get
3(x+4)=x-9
3x+12=x-9
3x-x=-9-12
2x=-21
x=-21/2
x=-10.5 answer
proof
(-10.5-9)/(-10.5+4)=3
-19.5/-6.5=3
3=3