Question 1100078
Allie is 5 more than twice as old as Katie. The sum of their ages is 23. How old are Allie & Katie
let katie is x yrs 
Allie=2x+5
x+2x+5=23
3x+5=23
3x=18
x=6
answer 
katie is 6 yrs and Allies is 17 yrs