n+3+n=13 - solution

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Solution for n+3+n=13 equation:

n in (-oo:+oo)

n+n+3 = 13 // - 13

n+n-13+3 = 0

2*n-10 = 0 // + 10

2*n = 10 // : 2

n = 10/2

n = 5

n = 5

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