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23-((2/5)*x) = 23-((2/5)*x) // - 23-((2/5)*x)
(2/5)*x-((2/5)*x)-23+23 = 0
(-2/5)*x+(2/5)*x-23+23 = 0
0 = 0
x naleu017Cy do R
x in (-oo:+oo)
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