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(2*x)/5+23 = 4*x // - 4*x
(2*x)/5-(4*x)+23 = 0
(2*x)/5-4*x+23 = 0
23-18/5*x = 0 // - 23
-18/5*x = -23 // : -18/5
x = -23/(-18/5)
x = 115/18
x = 115/18
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