When 4 is subtracted from three-fourths of the number the result is equal to one-half of a number What is the number?

Let the number be N, then

(3/4 of N) - 4 = (1/2 of N) or

(3N/4) - 4= N/2 or

3N - 16 = 2N or

3N - 2N = 16

N = 16

Verification: When 4 is subtracted from 3/4 of 16 you get (12 - 4) = 8 which is equal to 1/2 of 16 which is 8 also