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a+4a-9=630?
asked Nov 12, 2013 in PRE-ALGEBRA by futai Scholar
recategorized Nov 12, 2013 by moderator
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a+4a-9 = 630

5a-9 = 630

Add 9 to each side.

5a-9+9 = 630+9

5a = 639

Divide each side by 5.

a = 639/5

answered Nov 12, 2013 by william Mentor

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