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9(n+3)=7n-3?

algebra

2007-05-01 13:27:36 · 3 answers · asked by ur baby 1 in Science & Mathematics ➔ Mathematics

3 answers

9(n+3)=7n-3
9n+27=7n-3
-27
9n=7n-30
-7n
2n=-30
/2 /2
n=-15

2007-05-01 13:33:46 · answer #1 · answered by Cherriest 7 · 0⤊ 0⤋

36

2016-09-05 00:18:59 · answer #2 · answered by ? 1 · 0⤊ 0⤋

9n+27=7n-3
9n-7n+27=7n-7n-3
2n+27=-3
2n+27-27=-3-27
2n=-30
n=-15

2007-05-01 14:02:55 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋

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