math and i don't get it

Question

the difference of jenny's age and 7 is 66 use the variable j to represent jenny's age

Answer 1

j-7 = 66

j = 66+7= 73 years old = jenny's age

or

the "difference" is often used to mean a positive number, if so, then

|j-7| = 66

and

j-7 =66 gives one solution, 73

but there's a 2nd solution

j=59

there's also a difference of 7 between 66 and 59