Answer:
AB = -10
Im confused is this what you wanted?
Answer
27 days
Step-by-step explanation:
father= 45 days
oldest son + father=27 days
youngest + father= 36 days
45-27=18
45-36=9
18+9=27
so it would take 27 days for both sons to complete the house
18 days=oldest son
9 days =youngest son
1/12 if each Question is A-D
3b because b^2-4= 1/b. So 2/1/b= 2b b+2b = 3b