1) 3(1.5x+9) = 4.5x +27 =-9
4.5x+27=-9
4.5x=-36
x=-8
2) -9(1/2x-3) = -4.5x +27 =45
-4.5x+27=45
-4.5x=18
x=-4
3) 2(2.25x+8) = 4.5x+16=11.5
4.5x+16=11.5
4.5x=-4.5
x=-1
4) 8.5x - 2(2x+8) = 8.5x -4x -16 = 4.5x-16=11
4.5x-16=11
4.5x=27
x=6
Hope it helped!