Answer the photo below thanks

What is the answer to |-2x-5|-|-4+8| and x=7

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?