Answer:

Step-by-step explanation:
You need to subtract the coefficients to get the answer.
Let's look at the equation...

The coefficient is 3 and 1
So, you do 3-1
You get 2
So...
Answer:
-2xl -2y + 99
Step-by-step explanation:
Answer:
you would put a point on 10 then an arrow up to 20
Step-by-step explanation: