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b in (-oo:+oo)
4*(3-(7*b)) = -44 // + 44
4*(3-(7*b))+44 = 0
4*(3-7*b)+44 = 0
4*(3-7*b)+44 = 0
56-28*b = 0
56-28*b = 0
56-28*b = 0 // - 56
-28*b = -56 // : -28
b = -56/(-28)
b = 2
b = 2
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