CPM Homework Help : CC3 Problem 7-21

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7-21.

Evaluate each expression below for $a$ when $a=\frac{2}{3}$ , if possible.

$24a$
Hint (a):
Multiply $24$ by $2$ , then divide by $3$ .
Answer (a):
$\frac{24}{1}\cdot\frac{2}{3}=\frac{48}{3}=16$

$3a$
Hint (b):
Use the same method as part (a).

$\frac{a}{0}$
Hint (c):
Dividing by $0=$ undefined.

$\frac{0}{a}$
Answer (d):
$0$

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