Answer:
z = 61.25, or 61 1/4
Explanation:
This equation is a little easier to work with in the form
7 z
---- = -----
12 105
Cross-multiplying, we get 7(105) = 12z, or
12z = 735, or z = 61.25, or 61 1/4
4.5m questions
5.8m answers