Question

9x - 5y = 120
6X - 5y=160​

Answer 1

Respuesta:

x=8

y=80/9

Explicación paso a paso:

9x - 5y = 120

9x=120+5y

x=120+5y/9

x=40+5y/3

6X - 5y=160

6(40+5y/3)-5y=160

2(40+5y)-5y=160

80+10y=160

10y=160-80

10y=80

y=8

x=40+5y/3

x=40+5(8)/9

x=40+40/9

x=80/9