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20-((3*x)/3) = 6*x+8/5 // - 6*x+8/5
20-((3*x)/3)-(6*x)-(8/5) = 0
20-x-6*x-8/5 = 0
92/5-7*x = 0 // - 92/5
-7*x = -92/5 // : -7
x = -92/5/(-7)
x = 92/35
x = 92/35
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