Answer:
![\large\boxed{(-2z^2-14)-(-12z^2)=10z^2-14}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B%28-2z%5E2-14%29-%28-12z%5E2%29%3D10z%5E2-14%7D)
Step-by-step explanation:
![(-2z^2-14)-(-12z^2)=-2z^2-14+12z^2\qquad\text{combine like terms}\\\\=(-2z^2+12z^2)-14=10z^2-14](https://tex.z-dn.net/?f=%28-2z%5E2-14%29-%28-12z%5E2%29%3D-2z%5E2-14%2B12z%5E2%5Cqquad%5Ctext%7Bcombine%20like%20terms%7D%5C%5C%5C%5C%3D%28-2z%5E2%2B12z%5E2%29-14%3D10z%5E2-14)
First, organize all of the like terms. All of the numbers to one side, all of the variables to the other. Then, divide to get x by itself.
The answer would be letter C=axis
6:45pm. because from 4 to 12 would be 4 hours then subtract 5 more hours leaves you at 7:25 pm. now subtract 45 from that which leaves you at 6:45 pm.
Answer:
Denoting 2 desired numbers: x and y, then:
x + y = 17
2x = 3y + 4
<=>
x = 17 - y
2*(17 - y) = 3y + 4
<=>
x = 17 - y
34 - 2y = 3y + 4
<=>
x = 17 - y
5y = 30
<=>
y = 6
x = 17 - 6 = 11
Hope this helps!
:)