3/13x=21 - solution

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Solution for 3/13x=21 equation:

x in (-oo:+oo)

(3/13)*x = 21 // - 21

(3/13)*x-21 = 0

3/13*x-21 = 0 // + 21

3/13*x = 21 // : 3/13

x = 21/3/13

x = 91

x = 91

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