Answer:
(-7)
Step-by-step explanation:
just plug in the number in the x place to solve
Answer:
1.75
Step-by-step explanation:
If a and b are two numbers, then their arithmetic mean is

Given:

Divide this equation by 10:

Now, divide it by 2:

When you have -(-2) it equals +2 and the same goes for any other number. When you have +(-2) it equals -2 and the same goes for any other number. Hope this helps!
Answer:its c
Step-by-step explanation:
that is how i would do it.
They are both divisible by 3 so we divide both by 3 and get
3(5+7)