-3+n/2=7 - solution

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Solution for -3+n/2=7 equation:

n in (-oo:+oo)

n/2-3 = 7 // - 7

n/2-7-3 = 0

1/2*n-10 = 0 // + 10

1/2*n = 10 // : 1/2

n = 10/1/2

n = 20

n = 20

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