How do you solve $3/x=7/10$ ?

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Answer 1 · 2016-07-08T21:51:37

$x = 30/7$

Cross multiply.

$3/x = 7/10$

$3times10 = 7timesx$

$30 = 7x$

$x = 7/30$

Answer 2 · 2016-07-08T21:54:14

$x = 30 / 7$

The first step we need to take to solve the problem is get rid of the fractions in this case we can simply cross multiply:

$3/x = 7/10$

So multiply the left numerator by the right denominator, then the left denominator by the right numerator.

$30 = 7x$

Simply solve like a standard linear equation:

$7x = 30$
$x = 30 / 7$

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