You can't. 17 + 2n = 21 + 2n gives: 2n = 4 + 2n which gives 0=4 which is not possible so the sum is not solveable.
Exactly that. 2n+2.
(2n + 7)(2n + 7)
It can be simplified to: 9m-2n
2n + 19 = -7 2n = -7 - 19 2n = -26 n= -13
Four more than twice a number.
Four more than twice a number.
2n + 4m - 2n + m = 5m
2n plus 4 = 2n + 4
2n plus 5 n would be 7n and its impossible to solve the value of n.
4n
7+2n
n(2n - 1)(2n + 7)
You can't. 17 + 2n = 21 + 2n gives: 2n = 4 + 2n which gives 0=4 which is not possible so the sum is not solveable.
5n = 2n + 3n .
Exactly that. 2n+2.
(2n + 7)(2n + 7)