$- 20 - 3 \frac{1}{2}$ = ___

-23 $\frac{1}{2}$

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23 $\frac{1}{2}$

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-13 $\frac{1}{2}$

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13 $\frac{1}{2}$

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Solution

The correct option is A
-23 $\frac{1}{2}$

-x-y = -(x+y)

$- 20 - 3 \frac{1}{2}$ = - ( $20 + 3 \frac{1}{2}$ ) = -23 $\frac{1}{2}$

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