8.8-3.4=5.4
Just subtract 8-3 and 8-4 and you'll get 5.4
Hope it helps!

Brainliest please if you found my answer helpful! :)
Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
Answer:x+21
Step-by-step explanation:
-5^4
= -625
-5 • -5 • -5 • -5 = -625