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(-3/4)*(8*x-12) = 27 // - 27
(-3/4)*(8*x-12)-27 = 0
-3/4*(8*x-12)-27 = 0
-3/4*(8*x-12)-27 = 0
-6*x-18 = 0
-6*x-18 = 0
-6*x-18 = 0 // + 18
-6*x = 18 // : -6
x = 18/(-6)
x = -3
x = -3
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