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b in (-oo:+oo)
b/13-(36/13) = 8/13 // - 8/13
b/13-(36/13)-(8/13) = 0
b/13-36/13-8/13 = 0
1/13*b-44/13 = 0 // + 44/13
1/13*b = 44/13 // : 1/13
b = 44/13/1/13
b = 44
b = 44
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