2n+2=20

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Solution for 2n+2=20 equation: 


n in (-oo:+oo)

2*n+2 = 20 // - 20

2*n-20+2 = 0

2*n-18 = 0 // + 18

2*n = 18 // : 2

n = 18/2

n = 9

n = 9

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