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(2/9)*(4*x-2) = 4 // - 4
(2/9)*(4*x-2)-4 = 0
2/9*(4*x-2)-4 = 0
2/9*(4*x-2)-4 = 0
8/9*x-40/9 = 0
8/9*x-40/9 = 0
8/9*x-40/9 = 0 // + 40/9
8/9*x = 40/9 // : 8/9
x = 40/9/8/9
x = 5
x = 5
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