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Keaton Higgins
Mathematics
18 July, 02:07
Simplify the expression 5a - 2a + 9
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Roy Harris
18 July, 02:23
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3a + 9
You subtract 2a from 5a, which equals 3a, but 9 is by itself, so it stays the same.
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18 July, 02:30
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Since there are like terms, you can combine them
5a-2a = 3a
So, then you get
3a+9
Then you can factor to get a GCF of 3
3 (a+3)
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