-2n+4=-20

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Solution for -2n+4=-20 equation: 


n in (-oo:+oo)

4-2*n = -20 // + 20

4-2*n+20 = 0

24-2*n = 0 // - 24

-2*n = -24 // : -2

n = -24/(-2)

n = 12

n = 12

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