3(x+2)=5x-3
3x+6=5x-3
5x-3x=6+3
2x=9
x=4.5

3x+3-2(x-1)=3
3x+3-2x+2=3
x=3-5
x=-2

(x-1)/2+(x+2)/3=6
3(x-1)+2(x+2)=36
3x-3+2x+4=36
5x=35
x=7