# Skills Handbook - Simplifying Fractions - Exercises: 10

3

#### Work Step by Step

We solve these problems by comparing the numerators and the denominators. The denominator in the first fraction is 4 times greater than the denominator in the second fraction, so we know that the numerator of the second fraction must be 1/4 as much. Thus, we multiply 12 times 1/4, finding that the missing number is 3.

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