15-a/3 =-9 9/16/2013 | C from Oklahoma City, OK | 3 Answers | 0 Votes Mark favorite Subscribe Comment
It looks like (without parenthesis): a 15 - --- = -9 3 multiply both sides by 3 45 - a = -27 subtract 45 from both sides -a = -72 divide each side by -1 a = 72 1/19/2014 | Ginger M. Comment
Dear C., you have to use parentheses to avoid double reading!!!! (15 - a) / 3 = - 9 15 - a ---------- = - 9 3 15 - a = - 27 - a = - 27 - 15 - a = - 42 a = 42 9/16/2013 | Nataliya D. Comment Comments Nataliya, if using PEMDAS, division comes before subtraction. So unless the problem was presented with parenthesis, we wouldn't add them. What do you think? Kim 9/17/2013 | Kim Z. Comment
Nataliya, if using PEMDAS, division comes before subtraction. So unless the problem was presented with parenthesis, we wouldn't add them. What do you think? Kim 9/17/2013 | Kim Z.
15 - a/3 = -9 multiply by -3 to get: -45 + a = 27, then just add 45 to both sides to get: a = 72 Your Answer is, a = 72 9/16/2013 | Kim Z. Comment
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