18=21/2x-7/2

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Solution for 18=21/2x-7/2 equation: 


x in (-oo:+oo)

18 = (21/2)*x-(7/2) // - (21/2)*x-(7/2)

7/2-((21/2)*x)+18 = 0

(-21/2)*x+7/2+18 = 0

43/2-21/2*x = 0 // - 43/2

-21/2*x = -43/2 // : -21/2

x = -43/2/(-21/2)

x = 43/21

x = 43/21

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