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n in (-oo:+oo)
(-2/3)*n = 22/9 // - 22/9
(-2/3)*n-(22/9) = 0
(-2/3)*n-22/9 = 0
-2/3*n-22/9 = 0 // + 22/9
-2/3*n = 22/9 // : -2/3
n = 22/9/(-2/3)
n = -11/3
n = -11/3
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