I will draw a place value chart on paper than write the numbers
Answer:
C
Step-by-step explanation:
To solve, use inverse operations:

Now we solve for both +/- 7.
x+6=7
x=1
x+6=-7
x=-13
11/2 / 3 = 11/6 pounds per friend
divide 11/2 pounds by 3 in order to get answer
<span>-6x - 2 = 40
-6x = 42
x = -7
..................</span>