-4(у+5)+(12-у)=-4у-20+12-у=-5у-8
20+3(х-15)=20+3х-45=3х-25
16-4(2+а)=16-8-4а=8-4а
-18+8(4-х)=-18+32-8х=14-8х
-35-12(в-3)=-35-12в+36=1-12в
42-6(7+у)=42-42-6у=-6у
29-3(т-8)=29-3т+24=53-3т
4(5-у)-30=20-4у-30=-4у-10
-8(9+х)+50=-72-8х+50=-22-8х
(-12)(-а-2)-10=12а+24-10=12а+14
-19(2-х)+20=-36+19х+20=19х-16
16(7-а)-90=112-16а-90=22-16а
-15(х+4)+60=-15х-60+60=-15х
2(5-х-у)=10-2х-2у
(-3)(а+10-в)=-3а-30+3в
7(х-1+у)=7х-7+7у
(-15)(с-д-3)=-15с+15д+45
4(а-в+8)=4а-4в+32
(-12)(-х-у+2)=12х+12у-24
-6(1+с+д)=-6-с-д