3n+8=40-n - solution

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Solution for 3n+8=40-n equation:

n in (-oo:+oo)

3*n+8 = 40-n // - 40-n

3*n+n-40+8 = 0

4*n-32 = 0 // + 32

4*n = 32 // : 4

n = 32/4

n = 8

n = 8

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