Q: Solve n for 12 plus 4n equals 2n?

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n= -2

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.

-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4

2n/3 = 4 2n = 3*4 2n = 12 n = 6 :)

n + 2 = 5, solve for n.n = 5 - 2n = 3

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2(2n + 5) = 12 2n + 5 = 6 2n = 1 n = 1/2

2n plus 7 equals 19 2n equals 12 n equals 6

n= -2

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.

N=l-m

-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4

Solve for n. 2n+3=0 2n=-3 n=-3/2

2n/3 = 4 2n = 3*4 2n = 12 n = 6 :)

n + 2 = 5, solve for n.n = 5 - 2n = 3

6n -3=2n+9 6n-2n=9+3 4n=12 n=12/4 n=3

Solve for n. 6 = 1 - 2n + 5 6 = 6 - 2n 2n = 0 n = 0 Check it. 6 = 1 - 0 + 5 It checks.

It can be simplified to: 9m-2n