Question

Resolva o Sistema { 3+2y=3
2×-y=4

Answer 1

3+2y=3
2x-y=4

2y=3-3
2y=0
y=0

impossível

Answer 2

3+2y=3

2x-y=4

2x-3-(2y-y)=-1

2x-y=-1+3=2

x+y=2/2

x+y=1