B. x-5.12=14.88
X was the original amount of money you started with from which got taken away $5.12 leaving you with $14.88.
First we will find a common denominator which is 16
the first fraction doesn't have to change but 1/4 becomes 4/16 and 1/2 becomes 8/16 when you add 13/16 + 4/16 + 8/16 = 25/16 now simplify 1 9/16

is your answer
El hijo 13 y el padre 37 la suma da 50 y la diferencia es 24