The answer is -5, -5 added by 5 cancels each other out. Then when you add 4x + 8x, you get 12x. So when you do 12x= -60, you get -5.

7^2 is 49 and 24^2 567. add them both and you get
The answer is -2 because I already took this
Keep diving each of them by a number and see if it matches. For example I have 25, 50, and 100. The gcf is going to be 5.