Question

If a=3 and b= 8 what is the answer and how to solve b-3-3

Answer 1

Substitute 8 for b in the equation.
now you have 8-3-3
then subtract 8 and 3. you get 5. then subtract 5 and 3 which gives you 2.
the answer is 2.

Answer 2

Since b is a variable ( unknown) we replace b with 8 since its given to us so the equation turns to 8-3-3 which we do 8-3=5-3=2