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x in (-oo:+oo)
(i^7*n)/9-62 = (5*n)/9-49 // - (5*n)/9-49
(i^7*n)/9-((5*n)/9)-62+49 = 0
(i^7*n)/9+(-5/9)*n-62+49 = 0
1/9*i^7*n-5/9*n-13 = 0
x należy do R
x in (-oo:+oo)
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