2(X-2.6)=8
x-2.6=4
x=4+2.6
x=6.6
6(x+1.5)=37.2
x+1.5=6.2
x=6.2-1.5
x=4.7
4.5x-x=14
3.5x=14
x=14÷3.5
x=4