Which expression is equivalent to 8a + 20?

4 (2a + 20)

4 (2a + 5)

4 (4a + 16)

4 (4a + 5)

To determine the expression that is equivalent to 8a + 20, all you have to do is find the common denominator and divide the values by it.

8a + 20

8a/4 + 20/4

4 (2a + 5).

The correct solution would cue the second option - 4 (2a + 5).