Date: Wed, 30 Sep 1998 18:37:12 -0600 (CST)
Subject: Intergers and algerbra
Who is asking: Student
(1/2a + 1/3b) - (1/4a - 1/5b) + (1/6a - 1/7)
For the second pair of fractions the common denominator can be (4a)(5b) = 20ab, thus
You now have fractions with denominators 6ab and 20ab so 60ab is a common denominator, and hence
Now you need to add the third pair and then add what you get to the sum you have already.
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