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Exactly that. 2n+2.
3 + 3n = 9 + 2n + 4n n = -2
The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1
n= -2
12+4n = 2n12+4n-4n = 2n-4n12 = -2n-1/2(12 = -2n)-6 = n
Exactly that. 2n+2.
That factors to (2n + 1)(n + 2)
7+2n
18n + 27 or 9(2n + 3)
5n + 7 = 28 + 2n (-2n) 3n + 7 = 28 (-7) 3n = 21 therefore, n = 7
15m + (2n-6m) + 11m = = 15m + 11m + 2n - 6m = 26m - 6m + 2n = 20m + 2n = 2(10m + n)
Oh, dude, that's like adding 2 apples to 3 apples, you know? So, if you have 2n and then add 3n, you end up with 5n. It's like math, but with letters instead of numbers.
3 + 3n = 9 + 2n + 4n n = -2
The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1
Solve for n. 2n+3=0 2n=-3 n=-3/2
2n + 4m - 2n + m = 5m
1 + 2 + 4 + ... + 2n = 2n+1 - 1