Answer:
4/90 or 2/45, simplified
Step-by-step explanation:
you need a common denominator to subtract fractions, we can use 90
to create a fraction equivalent to 4/9 with a denominator of 90 you must multiply both top and bottom by 10 to get:
40/90
to create a fraction equivalent to 4/10 with a denominator of 90 you must multiply both top and bottom by 9 to get:
36/90
now you can subtract them to get 4/90 or 2/45, simplified
