Question

{ (5x+11.4y):32=9 x+y=32

Answer 1

x=32 - y

(5(32 - y) + 11.4y):32=9

(160 - 5y + 11.4y):32=9

 

5 - 0.2y=9

-0.2y=4

y=-20

 

x=32+20

x=52

Ответ: y=-20, x=52

 

Answer 2

 

 

 

otvet : x = 12, y = 20;