5+4n=21

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Solution for 5+4n=21 equation: 


n in (-oo:+oo)

4*n+5 = 21 // - 21

4*n-21+5 = 0

4*n-16 = 0 // + 16

4*n = 16 // : 4

n = 16/4

n = 4

n = 4

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