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samakan penyebutnya,
misalnya, a/b - c/d = ((a x d) - (b x c))/(b x d)
jadi, untuk soalnya,
(5(x - 5) - 6(3x - 2))/(6 x 5) = -6
((5x - 25) - (18x - 12))/30 = -6
(5x - 18x) - (25 - 12) = -6
-13x - 13 = -6
13x + 13 = 6
13x = -7
x = -7/13