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