Right now sally is 10 years old. Hope this helps!
Find the LCD of both fractions and that is 45.
Make the denominators the same as the LCD
Simplify, now denominators are the same
join the denominators
simplify
Answer: 23/45
That is just absolute value, basically what it means is take off whatever sign there was attached to it (such as a negative sign)
s < 30,000$ i dont know if this is what the question is asking but its the best i can come up with given the information you gave to me.