Question #1e38a

1 Answer
Aug 3, 2017

#b-12#

Explanation:

When you say a number is less than another number, you subtract the first number from the second.

For example, #3# less than #4# would be

#4 - 3 = 1#

and #4# less than #9# would be

#9-4=5#

Similarly, #12# less than #b# is simply #b-12#.