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January 25, 2015

January 25, 2015

Posted by **kev** on Monday, July 28, 2008 at 2:49am.

(5a-2b) + (-4a+5b)

what do I do with -2b when you line up the +5b?

- math -
**RACHELLE**, Monday, July 28, 2008 at 3:56am+3

- math -
**drwls**, Monday, July 28, 2008 at 7:43amThe sum of the two terms in parentheses is a - 3b

If you want the difference, it should be written

(5a - 2b) - (-4a + 5b)

which is the same as

(5a - 2b) + (4a - 5b) = 9a - 7b

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