Question 1204903
 elijah and kylie have a combined age of 31.
e + k =31
 elijah is 4 years older twice Kylie's age.
e = 2k+4
in the first equation, replace e with (2k+4)
(2k+4) + k = 31
3k = 31 - 4
k = 27/3
k = 9 yr old is Kylie' age
find E's age
e = 2(9) + 4
e = 18 + 4
e = 22 yrs is Elijah's age
:
Check 22 + 9 = 31