ALGEBRA NATION SECTION 2 TOPIC 1: CHECK YOUR UNDERSTANDING

1. Eric, emily and noah were all solving the problem 3(x+2)-9=2x + 3. eric said the first step should be the distributive property, emily said the first step should be the addition property of equality, and noah said the first step should be the subtraction property of equality. who was correct?

A. Eric, you have to get rid of parenthesis first

B. Emily, you need to add the 9 to both sides to combine like terms

C. Noah, you need to subtract 3 from both sides to get the constant terms together

D. They were all correct