3=x/7

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Solution for 3=x/7 equation: 


x in (-oo:+oo)

3 = x/7 // - x/7

3-(x/7) = 0

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

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

x = -3/(-1/7)

x = 21

x = 21

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