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(1/2)*(3*x-4) = 7 // - 7
(1/2)*(3*x-4)-7 = 0
1/2*(3*x-4)-7 = 0
1/2*(3*x-4)-7 = 0
3/2*x-9 = 0
3/2*x-9 = 0
3/2*x-9 = 0 // + 9
3/2*x = 9 // : 3/2
x = 9/3/2
x = 6
x = 6
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