21=7/8x

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Solution for 21=7/8x equation: 


x in (-oo:+oo)

21 = (7/8)*x // - (7/8)*x

21-((7/8)*x) = 0

(-7/8)*x+21 = 0

21-7/8*x = 0 // - 21

-7/8*x = -21 // : -7/8

x = -21/(-7/8)

x = 24

x = 24

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