You can translate this into the statement “33 is 3/4 of what number?”
Translating that into math, you have:
33 is 3/4 of what number?
33 = 3/4 • x
To solve 33 = 3/4•x, you divide both sides by 3/4
33÷ (3/4) = x
To divide by a fraction means you multiply by it’s reciprocal, 4/3.
33 ÷ (3/4) = 33 • 4/3
33 • 4/3 = 44
You started with 44 muffins.