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2*(3*x+7) = 37/2 // - 37/2
2*(3*x+7)-(37/2) = 0
2*(3*x+7)-37/2 = 0
(2^2*(3*x+7))/2-37/2 = 0
2^2*(3*x+7)-37 = 0
12*x-9 = 0
(12*x-9)/2 = 0
(12*x-9)/2 = 0 // * 2
12*x-9 = 0
12*x-9 = 0 // + 9
12*x = 9 // : 12
x = 9/12
x = 3/4
x = 3/4
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