оченьсрочно срочно
a)(x+27)-12=42
б)115-(35+у)=39
в)z-35-64=16
г)28-t+35=53
a)(x+27)-12=42
б)115-(35+у)=39
в)z-35-64=16
г)28-t+35=53
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х+27-12=42
х+15=42
х=42-15
х=27
б)115-(35+у)=39
115-35-у=39
80-у=39
80-39=у
у=41
в)z-35-64=16
z-99=16
z=16+99
z=115
г)28-t+35=53
63-t=53
63-53=t
t=10