1x/21=1 - solution

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Solution for 1x/21=1 equation:

x in (-oo:+oo)

(1*x)/21 = 1 // - 1

(1*x)/21-1 = 0

x/21-1 = 0

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

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

x = 1/1/21

x = 21

x = 21

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