https://openstax.org/books/prealgebra-2e/pages/4-4-add-and-subtract-fractions-with-common-denominators
4.4 Add and Subtract Fractions with Common Denominators - Prealgebra 2e | OpenStax
Remember, quarters are really fractions of a dollar. Quarters are another way to say fourths. So the picture of the coins shows that...
add and subtractcommon denominators4fractions