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(2/3)*x+4 = 5/3 // - 5/3
(2/3)*x-(5/3)+4 = 0
(2/3)*x-5/3+4 = 0
2/3*x+7/3 = 0 // - 7/3
2/3*x = -7/3 // : 2/3
x = -7/3/2/3
x = -7/2
x = -7/2
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