What is the 21/24 reduced to

N order to do this you need to find common multiples to factor out of both numbers, in this case 21 and 24 both have 3 so factor out a 3 and you get 7/8 and thats as far as you can go

If jon had $4.00 then takes away $2.25, then he should have $1.75 left. $4.00 - $2.25 = $1.75 hope this ; )