6a+3a-4a=21 (please solve)

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asked Feb 23, 2018 129k views

1 Answer

Reor · Answer 1 · 2018-03-02T03:07:48+0000

remember, you can do anything to an equation as long as you do it to both sides

6a+3a-4a=21
add like terms
6+3=9, and 9-4=5
5a=21
divide both sides by 5

a=(21)/(5)

6a+3a-4a=21 (please solve)

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