Question

x+2y=60
2x-2y=160

Me ajudem aí??​

Answer 1

Resposta:

x+2y=60

2x-2y=180

3x=240

x=240/3

x=80

x+2y=60

80+2y=60

2y=60-80

2y=-20

y=-20/2

y=-10