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-x+3y=2
__________ +
5y=5 <=> y=1
x+2y=3. |x3|
-x+3y=2 |x2|
__________ -
3x+6y=9
-2x+6y=4
___________ -
5x=5 <=> x=1
-x+3y=2 |x |-x2+3Y=2
--------------------- -
+1y =-5
y = -5
-X+3y=2
-x+3(-5)=2
-x+15=2
-x=2-15
-x=-13
x=13
jadi, y =-5 dan x=13