Here, Your Original expression is 60x - 24.
Take 12 as common, which is GCD of 24 & 60,
Therefore, It would be:
60x - 24
= 12 * 5x - 12 * 2
= 12 (5x - 2)
In short, your Answer would be 12(5x - 2)
Hope this helps!
Photon
Answer:

Step-by-step explanation:
Given
See attachment
Required
Determine the measure of 
.
So, we have:

Where:


Substitute these values in the above equation.


Collect Like Terms:


Here’s how you would work it out
Answer:
D
Step-by-step explanation:
i did it with eliminating choices