Well if it is the same number of Toothbrushes and Toothpaste tubes in a pack then you use the smallest number 12 and this is the answer.
The greatest number of packages he can make is 12.
What's the question you're asking?
I think this is the answer ----> 8.7 (8.66 rounded)
You have two equations.
since the second is already isolated, sub in x-4 for every y in equation 1 so that
![x^{2} - 4 [(x-4)^{2}] =16 ](https://tex.z-dn.net/?f=%20x%5E%7B2%7D%20-%204%20%5B%28x-4%29%5E%7B2%7D%5D%20%3D16%0A%20)
expand, collect like terms, factor to find x, then plug x value back into original equation to find y