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3x + 5y = 15 (x2) --> 6x + 10y = 30 _
-y = 30
y = -30
2x + 3y = 20
2x + 3(-30) = 20
2x - 90 = 20
2x = 20 + 90
2x = 110
x = 55
Hp = {(55,-30)}
semoga membantu ya :)