What is 4 over 5 minus 1 over 4?

Answer 1

Use the greatest common factor of 5 and 4 (20). Next, because whatever you do to the numerator you have to do to the denominator, you would multiply the 4 in 4/5 by 4 (because 5*4=20) and multiply the 1 in 1/4 by 5 (because 4*5=20).

What you should have after you apply this method should be 16/20 - 5/20, which equals 11/20.

Therefore, 4/5 - 1/4 = 11/20. Hope this helps!