n+8
yes
n = number.2n + 6=====
2n + 2 = 2(n + 1)Since you have been given that it is twice a variable with the variable only, you have 2n, and adding 2 yields 2n + 2, or 2(n + 1).
3 less than twice n is 2n-3
15+2*n = 9 2*n = -6 n = -3
2 more than twice a number. Well, the formula for that would be ( N x 2) + 2. The N stands for number. So, I hope that helps you a little. If you have a number to fill in you would put it in the n spot,
21 Solution: n = 13 + 8 n = 21
if you mean 2n=8, then N=4, which translate to 2x4=8
2n+12=x
3n +2(n+2)= 8+ 4(n+3) 3n +2n +4 = 8+ 4n +12 5n-4n = 20 - 4 n = 16
n + 8