Hey there! 
Basically your above absolute value is the proportions of real numbers regarding the sign of it. So, a negative absolute value will most likely be a positive. Same thing with positive & positive & also a positive & a negative. It all depends! 
So, the correction equation should be: 
|-56| = |56| 
Answer: =
Good luck on your assignment & enjoy your day! 
~Amphitrite1040:)