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10*x-(4/6) = 8*x-(20/4) // - 8*x-(20/4)
10*x-(8*x)-(4/6)+20/4 = 0
10*x-8*x-2/3+20/4 = 0
2*x+13/3 = 0 // - 13/3
2*x = -13/3 // : 2
x = -13/3/2
x = -13/6
x = -13/6
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