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(3/4)*(12*x-16)-((2/3)*(9*x-15)) = 0
(3/4)*(12*x-16)+(-2/3)*(9*x-15) = 0
3/4*(12*x-16)-2/3*(9*x-15) = 0
3/4*(12*x-16)-2/3*(9*x-15) = 0
3*x-2 = 0
3*x-2 = 0
3*x-2 = 0 // + 2
3*x = 2 // : 3
x = 2/3
x = 2/3
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