How do you subtract fractions?
There are 3 simple steps to subtract fractions
Step 1. Make sure the bottom numbers (the denominators) are the same
Step 2. Subtract the top numbers (the numerators). Put the answer over the same denominator.
Step 3. Simplify the fraction (if needed).
To subtract two functions, subtract their outputs. For example, if f (x) = 2x - 1 and g(x) = x + 4 , then (f - g)(2) = f (2) - g(2) = 3 - 6 = - 3 . (f - g)(x) = f (x) - g(x) = (2x - 1) - (x + 4) = x - 5 .