21/4=5n+4n-3/4

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Solution for 21/4=5n+4n-3/4 equation: 


n in (-oo:+oo)

21/4 = 5*n+4*n-(3/4) // - 5*n+4*n-(3/4)

21/4-(5*n)-(4*n)+3/4 = 0

21/4-5*n-4*n+3/4 = 0

6-9*n = 0 // - 6

-9*n = -6 // : -9

n = -6/(-9)

n = 2/3

n = 2/3

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