(5([x-1]/2-1)+2x)/3=5+x / multiply both sides by 3
5([x-1]/2-1)+2x=15+3x/ subtract 2x from both sides
5([x-1]/2-1)=2.5*x-7.5=15+x/ subtract (x-7.5) fdrom both sides
1.5*x=22.5 /divide both sides by 1.5
x=15
am i right?
