x/2-3=21 - solution

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Solution for x/2-3=21 equation:

x in (-oo:+oo)

x/2-3 = 21 // - 21

x/2-21-3 = 0

1/2*x-24 = 0 // + 24

1/2*x = 24 // : 1/2

x = 24/1/2

x = 48

x = 48

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