The factory made 3 batches of cookies.
(See my work below)
Answer:

Step-by-step explanation:
We want to combine alike terms so
-2/3c+14c & -9/5+3/10
14c-2/3

Multiply 14/1 by 3/3 to get the denominators the same

Subtract

simplify

now

Multiply 9/5 by 2/2

Subtract

Simplify

put both together

Hope this helps! If you have any questions on how I got my answer feel free to ask. Stay safe!
The sum of b and f is b+f
Three times this sum is 3(b+f)
--------------------------------------------32300
I believe that would equal 65/21
hope that helps!