x/19=21 - solution

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Solution for x/19=21 equation:

x in (-oo:+oo)

x/19 = 21 // - 21

x/19-21 = 0

1/19*x-21 = 0 // + 21

1/19*x = 21 // : 1/19

x = 21/1/19

x = 399

x = 399

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