Question 1178593
Allison age = a
jennifer age =j

Allison is seven less than three times the age of Jennifer. 

a=3j-7
a-3j =-7
Six years ago, one-fourth of the age of Allison is equal to the age of Jennifer
was then.

1/4 (a-6) = j-6   

a-6 = 4j-24

a-4j =-18
a-3j=-7

subtract

-j=-11

Jennifer's age =11 years
Allison's age ---> a=3j-7
=26 years