2-n-7n = 2-8n
7n(n−1)
n > 2
It is 2n^3 + 7n^2 - 13n + 3
n*(9 - 2) = 2*7 = 7n
8n + 7 - n - 98 = 7n - 91
7n + 1 = 6n + 8 7n=6n+7 (minus 1 from each side) n=7 (7n-6n equals n, you are left with n=7)
-2n - 4p + 2. Without knowing n and p, that's the best you get.
1 - 7n = 15 - 5n Add 5n to each side: 1 - 7n + 5n = 15 -5n + 5n ie 1 - 2n = 15; subtract 1 from each side: -2n = 14 divide both sides by -2: n = -7
9n-2=7n+50 7n+9n=50+2 16n=52 n= 3.25
7n-45n=2 -38n=2 38n=-2 n=-2/38=-1/19
4n - 7n = 21(4-7) n =21-3n = 21divide both sides by -3n = -7
t(n) = 5 - 7n for n = 1, 2, 3, ... The difference between each term is -7, therefore the nth term will be: t(n) = -2 + -7 × (n - 1) = -2 + 7n + 7 = 5 - 7n