Untitled Quiz

What is the common denominator for the fractions x/y and z/w?

• y + w

• y / w

• yw

• xz

To express the fraction 3/x with a denominator of xy, what must the numerator be?

• 3x

• 3y

• y

• 3

When adding fractions like a/b + c/d, why is it necessary to multiply a/b by d/d and c/d by b/b?

• To change the value of the fractions to make them easier to add.

• To ensure both fractions have the same numerator.

• To create equivalent fractions with a common denominator without changing their original values.

• To simplify the fractions before adding them.