http://wiki.answers.com/What_is_the_LCM_of_30_12_8_and_5
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-5n - (-2) = 27 -5n + 2 = 27 -5n + 2 - 2 = 27 - 2 -5n = 25 -5n/-5 = 25/-5 n = -5
5n-2+2=4n 5n=4n n=0
7
5n+15 = 25 5n = 25-15 5n = 10 n = 2
5n - 4 = 10n + 6-5n = 10n = -2
5n+2 or 5n-2. I'll assume 10n 10,20,30,40,50
-5n - (-2) = 27 -5n + 2 = 27 -5n + 2 - 2 = 27 - 2 -5n = 25 -5n/-5 = 25/-5 n = -5
2n/5 or 2/5n
5n-2+2=4n 5n=4n n=0
7
-48
2
5n+15 = 25 5n = 25-15 5n = 10 n = 2
5n - 4 = 10n + 6-5n = 10n = -2
A - B = -3n + 2 - (5n - 7) = -3n + 2 - 5n + 7 = 9 - 8n
5n - 10 = 0 5n - 10 (+10) = 0 (+10) 5n (/5) = 10 (/5) n = 2
8n-2+4n = 66-5n 8n+4n+5n = 66+2 17n = 68 n = 4