5n-1=20+2n

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Solution for 5n-1=20+2n equation: 


n in (-oo:+oo)

5*n-1 = 2*n+20 // - 2*n+20

5*n-(2*n)-20-1 = 0

5*n-2*n-20-1 = 0

3*n-21 = 0 // + 21

3*n = 21 // : 3

n = 21/3

n = 7

n = 7

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