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(2/3)*x = (3/2)^2 // - (3/2)^2
(2/3)*x-(3/2)^2 = 0
2/3*x-9/4 = 0 // + 9/4
2/3*x = 9/4 // : 2/3
x = 9/4/2/3
x = 27/8
x = 27/8
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