Can someone please explain how to do this I going to have it on a test PLEASE HELP

The Number is 11

Step-by-step explanation:

by first condition

we got it is an odd number

second condition

number less then12

third condition

between 10 to 14

Now,

odd number between 10 to 14

is 11 and 13

13 is greater then 12

therefore 11 is your answer

-a will be greater than -b because for example, when a=2 and b=5, -a=-2 and -b=-5