x + 1 = x + 1
x - x = 1 - 1
0 = 0
The initial weight is given by:

Then, we add a second weight:

Finally, we add a third weight:

Adding the three added weights, we can find the total weight.
We have then:

The total weight is:
Answer:
eddie now has
ounces on his line
They both have a y and x axis and they both represent things