please show step-by-step
15-2n = 17-3n
And... 5+6n = (-13)+2n
2007-01-16 13:58:43 · 6 answers · asked by Ella 2 in Science & Mathematics ➔ Mathematics
15-2n = 17-3n
15-2n+2n = 17-3n+2n
15 = 17-n
15-17 = 17-n-17
-2 = -n
-2(-1) = -n(-1)
n=2
5+6n = (-13)+2n
5+6n-2n = (-13)+2n-2n
5+4n = -13
5+4n-5 = -13-5
4n = -18
n = -18/4 or -9/2
2007-01-16 14:04:17 · answer #1 · answered by Taras 2 · 0⤊ 0⤋
15-2n = 17-3n
place like terms on same side of equation (change sign
when moving term to other side of equal sign)
(+3n) - 2n = 17 (-15)
simplify
1n = 2
n = 2
5 + 6n = (-13) + 2n
(-2n) + 6n = -13 (-5)
4n = -18
n = - 18/4
2007-01-16 14:06:13 · answer #2 · answered by chava 2 · 0⤊ 0⤋
15 - 2n = 17 - 3n
15 - 2n + 3n = 17 -3n + 3n
15 + n = 17
15 - 15 + n = 17 - 15
n = 2
2007-01-16 14:02:35 · answer #3 · answered by mjatthebeeb 3 · 0⤊ 0⤋
15-2n = 17-3n
-2n + 3n = 17 -15
n = 2
And...
5+6n = (-13)+2n
6n - 2n = -13 -5
4n = -18
n = -4,5
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2007-01-16 14:09:06 · answer #4 · answered by aeiou 7 · 0⤊ 0⤋
15-2n = = 17-3n
15-2n -15 = 17-3n - 15
-2n+3n=2-3n+3n
n=2
2007-01-16 14:04:15 · answer #5 · answered by sillyoldbear93 3 · 0⤊ 1⤋
somehow
2007-01-16 14:24:06 · answer #6 · answered by Rami 5 · 0⤊ 1⤋