Question

помогите….>
а)( х+27)-12=42
б)115-(35+y)=39

Answer 1

X=27
Y=41…………………………………….

Answer 2

Ответ:

а)(х+27)-12=42

х+27=42+12

х+27=54

х=54-27

х=27

(27+27)-12=42

42=42

б)115-(35+у)=39

35+у=115-39

35+у=76

у=76-35

у=41

115-(35+41)=39

39=39