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((1/2)*x^1)/2-2/3 = 0
((1/2)*x)/2-2/3 = 0
1/4*x-2/3 = 0 // + 2/3
1/4*x = 2/3 // : 1/4
x = 2/3/1/4
x = 8/3
x = 8/3
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