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(1/4)*(6*x+8) = 3 // - 3
(1/4)*(6*x+8)-3 = 0
1/4*(6*x+8)-3 = 0
1/4*(6*x+8)-3 = 0
3/2*x-1 = 0
3/2*x-1 = 0
3/2*x-1 = 0 // + 1
3/2*x = 1 // : 3/2
x = 1/3/2
x = 2/3
x = 2/3
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