2n+1+n=4 - solution

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Solution for 2n+1+n=4 equation:

n in (-oo:+oo)

2*n+n+1 = 4 // - 4

2*n+n-4+1 = 0

3*n-3 = 0 // + 3

3*n = 3 // : 3

n = 3/3

n = 1

n = 1

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