using the LCD method.... well, there are a couple of ways, but let's simply add them up.
well, the denominators are 5x and 2x... so the only LCD will just be 10x, since it's divisible by both, so let's use that one.

Answer:
Step-by-step explanation:
I'm pretty sure the answer is C sorry if I'm wrong
B because it’s in the middle
3.
30 divided by 10 equals 3
6520 is the answer.
6.52 * 10^3 === 6.52 * 1000 = 6520