Question

РЕШИТЕ СИСТЕМУ 2x+3y=82.8 x+2y=56.9

Answer 1

 

{2x+3y=82.8

{x+2y=56.9

 

{x=56.9-2y

{  113.8-y=82.8

{y=113.8-82.8

{y=31

{x= -5.1