Step-by-step explanation:
You said the other one would be the last haha just kidding I'm glad to help.
16. 
First, get rid of that parenthesis.

Now multiply both sides by 2 so that you can isolate k


19. 
This is a pretty easy one. If you didn't know, 121/11 is actually 11 :)

Simply multiply by 3 to isolate r :)


Answer:
6.85
Step-by-step explanation:
6 17/20
Convert to improper fraction.
137/20
Divide.
= 6.85
You would multiply each kilogram amount by 2.2 to get the point equivalent.
8 and 5 multiply to 40 but subtract to 3.
Answer
91
Step-by-step explanation:
62+27+x=180