What is the value of $\frac{1}{21} -17 -21 * \frac{1}{17} ?$
Select one:
a. $\frac{1}{17}$
b. $-\frac{1}{21}$
c. 1
d. -1

Answer

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Answer

So, the value of $\frac{1}{21} *-17 *-21 * \frac{1}{17}$ is $\boxed{1}$.

Steps

Step 1 ：The given expression is $\frac{1}{21} *-17 *-21 * \frac{1}{17}$.

Step 2 ：We can simplify this by cancelling out the common terms.

Step 3 ：The terms 21 and -21 cancel each other out, as do the terms 17 and -17.

Step 4 ：This leaves us with $\frac{1}{1}$, which is simply 1.

Step 5 ：So, the value of $\frac{1}{21} *-17 *-21 * \frac{1}{17}$ is $\boxed{1}$.