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(4/5)*x+8/5 = 23/10+3/2+1/2 // - 23/10+3/2+1/2
(4/5)*x+8/5-(23/10)-(3/2)-(1/2) = 0
(4/5)*x+8/5-23/10-3/2-1/2 = 0
4/5*x-27/10 = 0 // + 27/10
4/5*x = 27/10 // : 4/5
x = 27/10/4/5
x = 27/8
x = 27/8
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