Answer:
4
<em>BRAINLIEST, PLEASE!</em>
Step-by-step explanation:
Multiples of 2: 2, <u>4</u>, 6, 8, 10
Multiples of 4: <u>4</u>, 8, 12, 16, 20
idrk sorry I'm horrible at mathhh
3/7 * -8/9= -24/63= -8/21