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 :)


The answer is (20,0). We can determine the sum of two vector points by adding x1 to x2 and y1 to y2. This is like adding integers, the only difference is the answer is in vector form. In here, we have (x,y). x = 7+13 and y = 5+(-5). that is why we have the (20,0) as the answer.
i'm going to assume you're supposed to solve for x
Answer:
x = -2
Step-by-step explanation:
so you're trying to get x out of the equation and by it self
i would start this off by setting the equation equal to 0
then subtract 6
i would then divide by 3 on each side
you should then have x+4=2
you then subtract 4 to cancel it out
you then get your answer of x = -2
hope this helps and lmk if you have questions!! <3
Let me try my best if I can help you
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