Уравнения 1)(24+x)-21=10 2)(45-y)+18=58 3)(y-35)+12=32 4) 56-(x+12)=24
1)(24+x)-21=10 24+x=10+21 24+x=31 x=31-24 x=7 2) (45-y)+18=58 45-y=58-18 45-y=40 y=45-40 y=5 3)(y-35)+12=32 y-35=32-12 y-35=20 y=35+20 y=55 4)56-(x+12)=24 x+12=24+56 x+12=80 x=80-12 x=68