20-1/2x=55

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Solution for 20-1/2x=55 equation: 


x in (-oo:+oo)

20-((1/2)*x) = 55 // - 55

20-((1/2)*x)-55 = 0

(-1/2)*x-55+20 = 0

-1/2*x-35 = 0 // + 35

-1/2*x = 35 // : -1/2

x = 35/(-1/2)

x = -70

x = -70

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