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x in (-oo:+oo)
x = 145-((2/3)*x) // - 145-((2/3)*x)
x+(2/3)*x-145 = 0
5/3*x-145 = 0 // + 145
5/3*x = 145 // : 5/3
x = 145/5/3
x = 87
x = 87
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