Visualize Fractions: example 4.15

Find a fraction with a denominator of $21$ that is equivalent to $\frac{2}{7} .$

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution
To find equivalent fractions, we multiply the numerator and denominator by the same number. In this case, we need to multiply the denominator by a number that will result in $21 .$

Since we can multiply $7$ by $3$ to get $21,$ we can find the equivalent fraction by multiplying both the numerator and denominator by $3 .$

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Find a fraction with a denominator of $21$ that is equivalent to $\frac{6}{7} .$

How did it go?