Answer :
Answer:
Step-by-step explanation:
Bree's age = x
David's age= 3x+7
x*(3x+7)=110
3x² + 7x =110
3x² + 7x - 110 = 0
3x² - 15x +22x - 22*5 = 0
3x*(x - 5) +22 (x - 5) = 0
(x - 5) (3x + 22) = 0
x - 5 = 0 { 3x + 22 = 0 is not considered as age wont come in negative}
x = 5
Bree's age = 5 years
David's age = 3x + 7 = 3*5 + 7 = 15 + 7 = 22 years