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b in (-oo:+oo)
5/11 = (3*b)/11+(8*b)/22 // - (3*b)/11+(8*b)/22
5/11-((3*b)/11)-((8*b)/22) = 0
(-3/11)*b+(-4/11)*b+5/11 = 0
5/11-7/11*b = 0 // - 5/11
-7/11*b = -5/11 // : -7/11
b = -5/11/(-7/11)
b = 5/7
b = 5/7
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