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(1/2)*(2*x+3)+4*x = 5 // - 5
(1/2)*(2*x+3)+4*x-5 = 0
1/2*(2*x+3)+4*x-5 = 0
1/2*(2*x+3)+4*x-5 = 0
5*x-5+3/2 = 0
5*x-7/2 = 0
5*x-7/2 = 0
5*x-7/2 = 0 // + 7/2
5*x = 7/2 // : 5
x = 7/2/5
x = 7/10
x = 7/10
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