9x+4+4(5x+1)=9x+4+20x+4=29x+8=29×1+8=37

3(3x-2)-(6x-2)=9x-6-6x+2=3x-6=3×(-2)-6=12

-5(3x-1)-3(5x+3)=-15x+5-15x-9=30x-14=30×3-14=76

5(3x+2)-3(5x+3)=15x+2-15x-9=3,2/7-9=-7

-8(3x-6)+4(6x-12)=-24x+48+24x-48=-5,11/13