Question

A){-x+y=1
{x+y=9

B){x+2y=5
{x-2y=-3

Me ajudem por favor!! *-*

Answer 1

Resposta:

-x+y=1

x+y=9

2y=10

y=10/2

y=5

x+y=9

x+5=9

x=9-5

x=4

x+2y=5

x-2y=-3

2x=2

x=2/2

x=1

x+2y=5

1+2y=5

2y=5-1

2y=4

y=4/2

y=2