contestada

Philip is making chocolate cupcakes for a school bake sale. He makes 4 batches and uses up an entire 5-cup bag of wheat flour. Philip decides to make one more batch of cupcakes with almond flour instead. The recipe says to add an extra
3

4
cup of flour if you're using almond flour.
Which equation can you use to find how much almond flour, a, is needed to make a batch of cupcakes?