n/4.2=21

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Solution for n/4.2=21 equation: 


n in (-oo:+oo)

n/4.2 = 21 // - 21

n/4.2-21 = 0

0.23809524*n-21 = 0 // + 21

0.23809524*n = 21 // : 0.23809524

n = 21/0.23809524

n = 88.19999929

n = 88.19999929

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