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-3 x y + -3 x-2 + 48 = 2 x y + 2 x 7
-3y + 6 + 48 = 2y +14
-3y + 54 = 2y + 14 ----> persamaaan
-3y - 2y = 14 - 54
-5y = -40
y = 8 -------> besar nilai y