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1/2-(x/3) = 2*x-(3/3) // - 2*x-(3/3)
1/2-(x/3)-(2*x)+3/3 = 0
1/2-(x/3)-2*x+3/3 = 0
3/2-7/3*x = 0 // - 3/2
-7/3*x = -3/2 // : -7/3
x = -3/2/(-7/3)
x = 9/14
x = 9/14
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