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x+y =2 |2|2x+2y=4
1x =1
x =1
3x+2y=5 | |3x+2y=5
x+y =2 |3|3x+3y=6
-1y=-1
y =1
sub
3x+2y=5
3x+2(1)=5
3x+2=5
3x=5-2
3x=3
x=1