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