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Guadalupe Galloway
Mathematics
20 November, 11:18
What is (3a-b) + 2a equal to?
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Zander Hess
20 November, 11:36
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We add like terms
so remembe that we can add the numbers in front of the placeholders
exg
3a+2a=5a becuase 3+2=5
we cannot add a+b
so
remember the associative property which is a + (b+c) = (a+b) + c
therefor we can move the parenthasees
also remember the commutativer property which is a+b=b+a so we can change
(3a-b) + 2a to (3a+2a) - b = (5a) - b=5a-b
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