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6*x-(2/5) = 2*x-(1/3)-(1/3) // - 2*x-(1/3)-(1/3)
6*x-(2*x)-(2/5)+1/3+1/3 = 0
6*x-2*x-2/5+1/3+1/3 = 0
4*x+4/15 = 0 // - 4/15
4*x = -4/15 // : 4
x = -4/15/4
x = -1/15
x = -1/15
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