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5/6 = (10/2)*x-3 // - (10/2)*x-3
5/6-((10/2)*x)+3 = 0
5/6-5*x+3 = 0
23/6-5*x = 0 // - 23/6
-5*x = -23/6 // : -5
x = -23/6/(-5)
x = 23/30
x = 23/30
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