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2*x-(1/5) = 28 // - 28
2*x-(1/5)-28 = 0
2*x-1/5-28 = 0
2*x-141/5 = 0 // + 141/5
2*x = 141/5 // : 2
x = 141/5/2
x = 141/10
x = 141/10
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