Subtract and simplify 8/9-4/27

8/9 - 4 / 27

24/27 - 4/27 = 20/27

Find the least common multiple for 9 & 27, which is 27

9 x 3 = 27

what you do the denominator (bottom) you must do to the numerator (top)

8 x 3 = 24

Now that you have like denominator, subtract numerators 24-4 = 20

Which gives you 20/27 in it's simplest form