Distributing

The question

Mia wrote 6(x + 4) + 5(x + 4) = 11x + 24. Which is correct?

6(x + 4) + 5(x + 4)

6(x + 4) + 5(x + 4)=6x + 24 + 5x + 20

6(x + 4) + 5(x + 4)=11x + 44

they wrote:11x + 24

Do the step yourself first, then compare with their line.
On your own, writing every step: 6(x + 4) + 5(x + 4) becomes 6x + 24 + 5x + 20.
Tidy that up and it is 11x + 44.
Now compare. They wrote 11x + 24, and the first bracket reached its x but not its number — so the correct answer is 11x + 44.

How it works.

01
Do the step yourself first, then compare with their line.
02
On your own, writing every step: 6(x + 4) + 5(x + 4) becomes 6x + 24 + 5x + 20.
03
Tidy that up and it is 11x + 44.
04
Now compare. They wrote 11x + 24, and the first bracket reached its x but not its number — so the correct answer is 11x + 44.