Answer:
- 3y
Step-by-step explanation:

Hope this helps
B because in commutative property of addition the numbers switch but they do not change the sign nor the numbers. hope this helped
Answer:
3u-47
Step-by-step explanation:
Just combine like terms, which for this case is the -40 and the -7. Hope this helps!
Simple...
which ones have a slope of -4?
Work is attached. :D
Answer:
Same here
Step-by-step explanation: