Answer:1,2,4,5, I just took the test
Step-by-step explanation:
Answer:21
Step-by-step explanation:
Answer:
or 
Given expression:
Simplify it in steps below:
<u>Used properties:</u>



Answer:
-ab/1
Step-by-step explanation:
The multiplicative inverse of x/y is y/x, because when multiplied it equals 1.
x/y time y/x = xy/xy, which equals one.
In this case, -1/ab times -ab/1 = -1ab/-1ab, which equals one.