CPM Homework Help : MC1 Problem 8-67

For each of the following pairs of fractions, complete the fraction on the right so that the two fractions are equivalent. Using a Giant One might be helpful.

$\frac { 30 } { 35 } = \frac { 6 } { \square }$
Hint (a):
The Giant One for this problem could look like this:
Answer (a):
$\frac{30}{35}=\frac{6}{7}$
since $35$ divided by $5$ is $7$ .

$\frac { 8 } { 40 } = \frac { \square } { 5 }$
Hint (b):
Make a Giant One like in part (a), if that is helpful for you.

$\frac { - 15 } { - 20 } = \frac { \square } { 4 }$
Hint (c):
The Giant One for this problem could look like this: