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(8*x)/20 = 5*x-(5/20) // - 5*x-(5/20)
(8*x)/20-(5*x)+5/20 = 0
(8*x)/20-5*x+5/20 = 0
1/4-23/5*x = 0 // - 1/4
-23/5*x = -1/4 // : -23/5
x = -1/4/(-23/5)
x = 5/92
x = 5/92
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