Question

Alejandro solved the equation 5(7x^2-2)-8=3. He wrote 5(7x^2-2)-8=11 as his first step. What property justifies his first step?

A.commutative property of addition
B.addition property of equality
C.multiplication property of equality
D.distributive property

Answer 1

Explanation:

The addition property of equality. It says that if you add the same number to each side of the equation, the two sides of the equation will be equal. In this case, the number 8 was added to each side.

Hope this helps :)

Answer 2

B. Addition property of equality as his first step on solving 5(7x²-2)-8=3

Explanation:

5(7x²-2)-8=3

5(7x²-2)-8+8=3+8 The amount added on the 1st member it is added on 2nd member of this equality

5(7x²-2)=11