5)
4*(x+14)-3*(x-12)=3*24
4x+56-3x+36=72
x+92=72
x=72-92
x= -20
6)
4*(7x-4)-9*(3x+3)=6*(8-x)
28x-16-27x-27=48-6x
x-43=48-6x
x+6x=48+43
7x=91
x=91:7
x=13
7)
2*(7x-3)-3*(4x+3)=18*(x-2)
14x-6-12x-9=18x-36
2x-15=18x-36
18x-2x=36-15
16x=21
x=21:16
x= 1 5/16