21(n/7)=21(n/3+8/21)

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Solution for 21(n/7)=21(n/3+8/21) equation: 


n in (-oo:+oo)

21*(n/7) = 21*(n/3+8/21) // - 21*(n/3+8/21)

21*(n/7)-(21*(n/3+8/21)) = 0

21*(n/7)-21*(n/3+8/21) = 0

3*n-21*(1/3*n+8/21) = 0

3*n-21*(1/3*n+8/21) = 0

-4*n-8 = 0

-4*n-8 = 0

-4*n-8 = 0 // + 8

-4*n = 8 // : -4

n = 8/(-4)

n = -2

n = -2

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