Question

(х+27)-12=42

28-t +35=53

решите уравнения

Answer 1

(х+27)-12=42

х+27=42+12

х+27=54

х=54-27

х=27 

 

28-t +35=53

63-53=t

10=t 

t=10 

Answer 2

(х+27)-12=42

х+27-12=42

х=42-27+12

х=27

 

 

28-t+35=53

28+35-53=t

t=10