3/13=x/7 - solution

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Solution for 3/13=x/7 equation:

x in (-oo:+oo)

3/13 = x/7 // - x/7

3/13-(x/7) = 0

3/13-1/7*x = 0 // - 3/13

-1/7*x = -3/13 // : -1/7

x = -3/13/(-1/7)

x = 21/13

x = 21/13

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