Решите уравнения: 1.(Х+27)-12=42 2.115-(35+У)=39 3.Z-35-64=16 4.28-t+35=53
1. x+27-12=42 x=42-27+12 x=27 2. 115-35-y=39 115-35-39=y y=41 3. z-35-64=16 z=16+35+64 z=116 4. 28-t+35=53 28+35-53=t t=10