12=21/2x

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Solution for 12=21/2x equation: 


x in (-oo:+oo)

12 = (21/2)*x // - (21/2)*x

12-((21/2)*x) = 0

(-21/2)*x+12 = 0

12-21/2*x = 0 // - 12

-21/2*x = -12 // : -21/2

x = -12/(-21/2)

x = 8/7

x = 8/7

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