7n+8=20+4n - solution

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Solution for 7n+8=20+4n equation:

n in (-oo:+oo)

7*n+8 = 4*n+20 // - 4*n+20

7*n-(4*n)-20+8 = 0

7*n-4*n-20+8 = 0

3*n-12 = 0 // + 12

3*n = 12 // : 3

n = 12/3

n = 4

n = 4

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