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