The expression is rewritten using the distributive property on the right side, where we distribute the 3, then multiply each by 3 and add the results. The same number works if the 5 is on the other si...The expression is rewritten using the distributive property on the right side, where we distribute the 3, then multiply each by 3 and add the results. The same number works if the 5 is on the other side of the parentheses, as in the example below. The expression on the right, which is simplified using the distributive property, is shown to be equal to 15, which is the resulting value on the left as well.