(7/10)n=21

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Solution for (7/10)n=21 equation: 


n in (-oo:+oo)

(7/10)*n = 21 // - 21

(7/10)*n-21 = 0

7/10*n-21 = 0 // + 21

7/10*n = 21 // : 7/10

n = 21/7/10

n = 30

n = 30

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