my best guess would be b because 1/2 is equal to 2/4 and since you get a negative when subtracting from 3/4, you have to take away a whole number from the fraction. 32-24=8. 8-1=7 and then you add 4/4 to 2/4 in which you get 6/4. 6/4 - 3/4 = 3/4, meaning the answer would be 7 3/4 which is b. i hope it’s correct :)
