Answer:
[tex]\frac{1}{5}[/tex]
Step-by-step explanation:
[tex]\frac{9}{20} - \frac{1}{4}[/tex]
Make sure they have a common denominator. To do so, you must find a number the both have in come. Here, the number they have in common is 20.
What times 4 equals 20? 5. Whatever you do to the denominator you must do to the numerator.
[tex]\frac{5}{5}[/tex] × [tex]\frac{1}{4}[/tex] = [tex]\frac{5}{20}[/tex]
Now you have [tex]\frac{9}{20} - \frac{5}{20}[/tex] = [tex]\frac{4}{20}[/tex]
Then you can simplify [tex]\frac{4}{20}[/tex] to [tex]\frac{1}{5}[/tex] by dividing it by [tex]\frac{4}{4}[/tex]
