2+7n=5n+20

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Solution for 2+7n=5n+20 equation: 


n in (-oo:+oo)

7*n+2 = 5*n+20 // - 5*n+20

7*n-(5*n)-20+2 = 0

7*n-5*n-20+2 = 0

2*n-18 = 0 // + 18

2*n = 18 // : 2

n = 18/2

n = 9

n = 9

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