1/2(21)(12)=x

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Solution for 1/2(21)(12)=x equation: 


x in (-oo:+oo)

12*21*(1/2) = x // - x

12*21*(1/2)-x = 0

126-x = 0 // - 126

-x = -126 // * -1

x = 126

x = 126

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