Answer:










Step-by-step explanation:

45 = 3x3x5
Or you could simplify it to 3^2x5
The reciprocal is 17/2 cause all you do is just flip the fraction
Answer:
-21/32
Step-by-step explanation:
It's easier to do this multiplication mentally if we rewrite the expression as follows:
-3 7 -21
------ * ------ = ---------
4 8 32