2u-3 (7-2u)=3 12-y=5 (4-2y)+10 2-2

2u-3 (7-2u)=32u-21+6u=38u=24u=24:8u=312-y=5 (4-2y)+1012-у=20-10 у +10-у +10 у=20+10-129 у=18 у=18:9 у=22-2 (x-8)=4x-42-2 х +16=4 х-4-2 х-4 х=-4-2-16-6 х=-22 х=3 целых 4/6=3 целых 2/31/3y+2=11/3 у=1-21/3 у=-1 у=-1:1/3=-1*3/1=-31/5x+11=1-3/5x1/5 х +3/5 х=1-114/5 х=-10 х=-10:4/5=-10*5/4=-12,58-1/4z=1 -1/4z=1-8-1/4z=-7z=7:1/4=7*4/1=28