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(2/3)*(6*x-9) = 2*x+4 // - 2*x+4
(2/3)*(6*x-9)-(2*x)-4 = 0
(2/3)*(6*x-9)-2*x-4 = 0
2/3*(6*x-9)-2*x-4 = 0
2/3*(6*x-9)-2*x-4 = 0
2*x-6-4 = 0
2*x-10 = 0
2*x-10 = 0
2*x-10 = 0 // + 10
2*x = 10 // : 2
x = 10/2
x = 5
x = 5
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