My answer would be to add 3 to both sides
180/3x then you get you answer
Answer is 10 cups divided by 3 cups = 1 pitcher smoothie,
10/3 or 3-1/3 pitchers of smoothies
I don’t see your choices so my answers might not be what you have to chose from
It's a to the power of 2
B to the power of 2
C to the power of 2
Step 1: write the number as a product, helps visualizing common factors.

I've marked things being repeating, so, group them up

Now you have a common factor again

Extra, if you want to split the first one, you can see it as the difference of

and

which is further split into