21/6=5x

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Solution for 21/6=5x equation: 


x in (-oo:+oo)

21/6 = 5*x // - 5*x

21/6-(5*x) = 0

21/6-5*x = 0

7/2-5*x = 0 // - 7/2

-5*x = -7/2 // : -5

x = -7/2/(-5)

x = 7/10

x = 7/10

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