Asked by kev
how would I find each sum or difference of
(5a-2b) + (-4a+5b)
what do I do with -2b when you line up the +5b?
(5a-2b) + (-4a+5b)
what do I do with -2b when you line up the +5b?
Answers
Answered by
drwls
The 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
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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