2j+5=21
2j=16
j=8
<span>Jack is 8 years old.
</span>
Hope This Helped! :3
Answer:
Step-by-step explanation:
D. 1/5 of 6
Answer:
n=5/3
Step-by-step explanation:

simplified it would be 5/3
(If you wouldn't mind, if this helped you, please give brainliest, I'm trying to get an achievement)