Answer:
b=8
Step-by-step explanation:
7b-7-8b=-15
Combine like terms
-b-7=-15
Add 7 on both sides
-b=-15+7
-b=-8
Divide by -1
b = 8
Question not clear, i think it's incomplete else sorry
Answer:
usually 2 depending on age
Answer:
explain further on this pls?