Question

x- 5y =8
-7 + 8y =25​

Answer 1

Respuesta:

x=28

y=4

Explicación paso a paso:

x- 5y =8

-7 + 8y =25

8x-40y=64

-35+40y= 125

8x-35=189

8x=189+35

8x=224

x=28

Comprobamos

x-5y=8

28-5y=8

28-8=5y

20=5y

4=y