Question

Which expressions are equivalent to 30 - 3y - 9?

3(17-y)
3(20-y-3)
17(3-y)
Or 20(3-3y)-9

Answer 1

3(20 - y - 3)

Step-by-step explanation:

If you expand it:

3 · 20 = 30

3 · -y = -3y

3 · -3 = -9

Combine them altogether to get:

30 - 3y - 9