7(x+3) write this expression using distributive property

First, multiply 7 and x, which gives you 7x.
Next, multiply 7 and 3 , which gives you 21.
Since it is addition, add an addition, which gives you 7x+21

The answer would be 7x+21
Btw I had trouble on this lesson as well but got it over time

The answer is a 5/20 because if u add all of the marbles there are 20 and there are 5 red marbles so 5/20 is the answer mark as brainliest