Question

2х + 9y = 39
5x-y=-20

ayuda!!!​

Answer 1

2x+9y=39
5x-y=-20
-y=-20-5x
Y=20+5x

2x+9(20+5x)=39
2x+180+45x=39
2x+45x=39-180
47x=-141
X=-141/47
X=-3


Y=20+5x
Y=20+5•(-3)
Y=20-15
Y=5