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x + y = 8
x - y = 2 -
2y = 6
y = 6/2
y = 3
subtitusi :
x + y = 8
x + 3 = 8
x = 8-3
x = 5
maka hp = {3,5}
= 2y = 6
y = 3
x +3 = 8
x = 5