-2x=(-4x+20)/2

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Solution for -2x=(-4x+20)/2 equation: 


x in (-oo:+oo)

-2*x = (20-4*x)/2 // - (20-4*x)/2

-((20-4*x)/2)-2*x = 0

(-1*(20-4*x))/2-2*x = 0

(-1*(20-4*x))/2+(-2*2*x)/2 = 0

-1*(20-4*x)-2*2*x = 0

-20 = 0

-20/2 = 0

-20/2 = 0 // * 2

-20 = 0

x belongs to the empty set

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