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2x-y=2 lx1l 2x-y=2
___________--
7y=14
y=14/7=2
jadi y=2
x+3y=8 lx1l x+3y=8
2x-y=2 lx3l 6x-3y=6
____________+
7x=14
x=14/7=2
jadi x=2
jadi