6/21=x/42

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Solution for 6/21=x/42 equation: 


x in (-oo:+oo)

6/21 = x/42 // - x/42

6/21-(x/42) = 0

2/7-1/42*x = 0 // - 2/7

-1/42*x = -2/7 // : -1/42

x = -2/7/(-1/42)

x = 12

x = 12

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