Multiply the 1/2 with the 2-4 then x-3
Answer:

-12x = 60
Step-by-step explanation:
This is the type of problem that you just have to do a bunch of times until you get it right -- I don't think there's anything I can tell you that'll help you immediately. Ask for your teacher for more exercises of this sort or look it up online.
Good luck!
Answer:
that is the answer in the photo above
I believe it is 18 because GF is half the length of CG if CG equals 12 then GF equals 6 add them together and you get CF equals 18.
Answer:
96
Step-by-step explanation:
O is double D. And A is equal to O. Hence 2*48=96