Question

What is missing for the following quantity to be true? (3y*5b)*10 = __(5b*10)

A. 5b

B. 10

C. 3y

D. 15

I am so so so desperate please just answer this one question!

Answer 1

match both sides so they're the same
3*y*5*b*10 = 3*y*5*b*10
it's just 3y