Question

quanto é:
1)
x+3y=11
2x+2y=14

2)
2x+y=6
2x+2y=4

Answer 1

1) x+3y=11 ×(-2)

-2x-6y=-22
+2x+2y=14
0-4y=-8
y=2

x=11-3.2 == x=11-6=5
x=5


2) 2x+y = 6 ×(-1)

-2x-y = -6
2x+2y = 4
0+y = -2
y = -2

2x-2 = 6 == x = 4