One of the steps Lewis used to correctly solve an equation is shown below. 3(x – 7) + 40 = 5

3x – 21 + 40 = 5

Which statements describe the procedure Lewis used in this step of solving the equation and identify the property that justifies that procedure?

A
Lewis added 3 and x to eliminate the parentheses. This procedure is justified by the associative property.

B
Lewis added 3 and x to eliminate the parentheses. This procedure is justified by the distributive property.

C
Lewis multiplied x and 7 by 3 to eliminate the parentheses. This procedure is justified by the associative property

D
Lewis multiplied x and 7 by 3 to eliminate the parentheses. This procedure is justified by the distributive property.