Fill in the missing fractions to create a true equation.

?/5 - 1/2 = 3/?

Let's solve for the missing fractions one at a time.

First, let's find the missing fraction in the numerator of the first fraction.
To do this, we need to find a common denominator for 5 and 2, which is 10.
To convert 1/2 into a fraction with a denominator of 10, we multiply the numerator and denominator by 5:
1/2 = 5/10.

Now our equation becomes:
?/5 - 5/10 = 3/?

Next, let's find the missing fraction in the denominator of the second fraction.
To do this, we need to find a common denominator for 5 and 10, which is also 10 (since they already share a denominator).
Therefore, the missing fraction is simply 10.

Our final equation becomes:
?/5 - 5/10 = 3/10.