21-x/2=10

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Solution for 21-x/2=10 equation: 


x in (-oo:+oo)

21-(x/2) = 10 // - 10

21-(x/2)-10 = 0

11-1/2*x = 0 // - 11

-1/2*x = -11 // : -1/2

x = -11/(-1/2)

x = 22

x = 22

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