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x in (-oo:+oo)
13-((2/3)*x) = 37 // - 37
13-((2/3)*x)-37 = 0
(-2/3)*x-37+13 = 0
-2/3*x-24 = 0 // + 24
-2/3*x = 24 // : -2/3
x = 24/(-2/3)
x = -36
x = -36
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