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(1/2)*(2*x-4) = 7-(2*x) // - 7-(2*x)
(1/2)*(2*x-4)+2*x-7 = 0
1/2*(2*x-4)+2*x-7 = 0
1/2*(2*x-4)+2*x-7 = 0
3*x-7-2 = 0
3*x-9 = 0
3*x-9 = 0
3*x-9 = 0 // + 9
3*x = 9 // : 3
x = 9/3
x = 3
x = 3
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