Mathematics, 19.05.2021 22:40, nothingworksoutforme

Assume that y varies directly with x, then solve.
If y=12 when x=15, find x when y=21.

The answer is in a fraction!
it is x = 105 / ? , I cant figure out the bottom .

Answers: 3

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Assume that y varies directly with x, then solve.
If y=12 when x=15, find x when y=21.
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