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(2/3)*x+5 = 4-((2/3)*x) // - 4-((2/3)*x)
(2/3)*x+(2/3)*x-4+5 = 0
4/3*x+1 = 0 // - 1
4/3*x = -1 // : 4/3
x = -1/4/3
x = -3/4
x = -3/4
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