Question

a)(x+27)-12=42                                 Б)115-(35+Y)=39

 

Answer 1

a)

(x+27)-12=42  

(х+27)=42+12

 х+27=54

х=54-27

х=27

Ответ. х=27

 

в)

 115-(35+Y)=39

-(35+y)= 39-115

-(35+y)=- 76

35+y=76

y=76-35

y= 41

Ответ. у=41 

Answer 2

а) (х+27)-12=42

х+27-12=42

х=42-27+12

х=27

 

б)115-(35+у)=39

115-35-у=39

-у=39-115+35

-у=-41

у=41