CPM Homework Help : CC2 Problem 3-84

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3-84.

Read the Math Notes box in this lesson. Use the information to find the multiplicative inverse, or reciprocal, of each number below.

$\frac { 7 } { 13 }$
Hint (a):
See the Math Notes box in the lesson.
Answer (a):
$\frac{13}{7}$

$\frac { 1 } { 5 }$
Hint (b):
See part (a).

$2$
Hint (c):
$2$ can be written as $\frac{2}{1}$
Answer (c):
$\frac{1}{2}$

$2\frac{5}{8}$
Hint (d):
$2=\frac{16}{8}$ . Add that to $\frac{5}{8}$ . Once you have the improper fraction, find the answer like you did in part (a) or part (b).

Check your answers by multiplying the given number with your answer and verifying that the product of the numbers is $1$ .

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