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-3(5x-4)+8(-3x+2)=-15x+12-24x+16=-39x+28
7x-3(5x+2)-6(7+2x)=7x-15x-6-42-12x=-20x-48
-5(3y-7)-2(6+4y)+3y=-15y+35-12-8y=-23y+23
2)-15x+20-24x+16=-39x+36
3) 7x-15x-6-42-12x=-20x-48
4)-15y+35-12-8y+3y=-20y+23