Answer:
both angles are the same, so you can use it interchangeably in proving.
But i suggest you to mantain only one, because it's easier to understand and it looks better.
Subtract 2b by both sides which gets -b+4=-5 then subtract 4 by both sides so you get -b=-9 and divide -1 by both sides so that b=9
Answer: -29a-6b+59c
You need to combine like terms
Answer:
10
Step-by-step explanation:
2+2=4
4+6= 10
