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x+y=8
------------- -
-2y=6
y=6÷-2
y=-3
kepers(1)
x-y=2
x-3=2
x=2+3
x=5
jadi x=5 dan y=-3
x+y=8
----------+
2x+0=10
2x=10
x= 5
maka y adalah:
x+y=8
5+y=8
y= 8-5
y= 3
Smoga membantu ya,