Step-by-step explanation:
Hey there!
When you move a number from the denominator that has a negative exponent to the numerator, that exponent becomes positve.
In this case, the 5 to the power of -1 will turn to 5 to the power of 1 when moved to the numerator (5 to the power of 1 is 5)
Now when we multiply 5 by -3, we get the answer -15!
If you have any questions, feel free to ask in the comments sections :-)
