For this case we must simplify the following expression:

We solve the operation of the second parenthesis, taking into account that different signs are subtracted and the sign of the major is placed:

We multiply:

We eliminate the parentheses:

We add similar terms, taking into account that equal signs are added and the same sign is placed:

Answer:
The simplified expression is: 
Male to female=52:48
write as faction
52/48
divide 2
26/24
divide 2
13/12
Answer:
B
Step-by-step explanation:
I added all of then and then subtracted 47 from the 50.