8/21=2/7x

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Solution for 8/21=2/7x equation: 


x in (-oo:+oo)

8/21 = (2/7)*x // - (2/7)*x

8/21-((2/7)*x) = 0

(-2/7)*x+8/21 = 0

8/21-2/7*x = 0 // - 8/21

-2/7*x = -8/21 // : -2/7

x = -8/21/(-2/7)

x = 4/3

x = 4/3

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