SOLUTION: Add: [(j + 7) / b] + [(j - 9) / b]

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Question 25438: Add: [(j + 7) / b] + [(j - 9) / b]
Answer by brianunlv(12) About Me  (Show Source):
You can put this solution on YOUR website!
%28%28j+%2B+7%29+%2F+b%29+%2B+%28%28j+-+9%29+%2F+b%29
= %28%28j+%2B+7%29+%2B+%28j+-+9%29%29%2Fb ,since they have the same denominator b
= %282j-2%29%2Fb ,since j + j = 2j and 7 - 9 = -2
= 2%28j-1%29%2Fb ,factor 2 out