Question

Which expression is equivalent to 20x−8y

1. 2(10x+4y)

2. 4(5x−8y)

3. 4(5x−2y)

4. x(20−8y)

Answer 1

1.

Explanation:

We are trying to find out what is equal to 2(10x+4y)

2(10x+4y)

because 2 times 10x is 20x, 4y times 2 is 8y!