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9-64.

Which of the following expressions are equal to $1$ ? (Note: More than one expression may be equal to $1$ !)

$\frac{114}{114}$
Hint (a):
Any number or expression divided by itself is equal to one.
Hint 2(a):
Is the bottom of the fraction the same as the top?
Answer (a):
The expression is equal to $1$ .

$\frac{2}{3}\cdot\frac{3}{2}$
Hint (b):
Multiply the fraction.
$\frac{2}{3} \left( \frac{3}{2} \right) = \frac{6}{6}$
Hint 2 (b):
Follow the steps in part (a).

$\frac{m+4}{m+4}$
Hint (c):
Follow the steps in part (a).
Answer (c):
The expression is equal to $1$ .

$\frac{p^2}{p\cdot p}$
Hint (d):
Follow the steps in part (a).

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