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(2/5)*(x-(1/2)) = (1/3)*(x-(1/2)) // - (1/3)*(x-(1/2))
(2/5)*(x-(1/2))-((1/3)*(x-(1/2))) = 0
(2/5)*(x-1/2)+(-1/3)*(x-1/2) = 0
2/5*(x-1/2)-1/3*(x-1/2) = 0
2/5*(x-1/2)-1/3*(x-1/2) = 0
1/15*x-1/30 = 0
1/15*x-1/30 = 0
1/15*x-1/30 = 0 // + 1/30
1/15*x = 1/30 // : 1/15
x = 1/30/1/15
x = 1/2
x = 1/2
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