SOLUTION: 4a +7+2a=21-a
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Question 513159: 4a +7+2a=21-a
Answer by umail08(87) (Show Source): You can put this solution on YOUR website!
4a +7+2a=21-a
6a + 7 = 21 – a
6a + a = 21 – 7
7a = 14
7a/7 = 14/7
a = 2
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