X=-1
x-7=2x-6
subtract x from both sides.
-7=x-6
add 6 on both sides.
No I don’t think I can lift it, nor anybody in the whole world
Since every female chicken lays 4 eggs, if you have one chicken you have 4 eggs, if you have two chicken you have 8 eggs, and so on.
We can even build a little table to show some values:

So, as you can see, the ratio between the number of eggs and the number of female chicken is 4.
ANSWER: V=19.9*(0.9144m)^3=15,2146416738816 m^3
1 yard =0.9144 m
We will take the 18.0 cubic yards, cross multiply with 0.9144 and then divide the result by one to get
13.76m3
Sure hope this helps