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February 28, 2015

February 28, 2015

Posted by **randy** on Tuesday, October 4, 2011 at 1:05am.

3(a+4)/9 = 2a - 12

- math -
**Dr Russ**, Tuesday, October 4, 2011 at 4:44am3(a+4)/9 = 2a - 12

cancel down the 3/9

(a+4)/3 = 2a - 12

multiply through by 3

a+4 = 6a - 36

add 36 to both sides

a+40=6a

subtract a from both sides

40 = 5a

divide both sides by 5

8=a

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