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b in (-oo:+oo)
-3 = b+4*(4/3) // - b+4*(4/3)
-b-(4*(4/3))-3 = 0
-b-16/3-3 = 0
-b-25/3 = 0 // + 25/3
-b = 25/3 // * -1
b = -25/3
b = -25/3
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