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