Question

Como resolvo o sistema:
2x-2y=12
x+2y=11

Answer 1

2(11-2y)-2y=12
22-4y-2y=12
-6y=-10
y=10/6
y=5/3

x+2y=11
x+2(5/3)=11
x+10/3=11
x=11-10/3
x=23/3