Question

Alexis solved this equation:

–
2(4p–11)+7p
= –
10p–14
–
8p+22+7p
= –
10p–14
–
p+22
= –
10p–14
9p+22
= –
14
9p
= –
39
p
= –
4
Which property is not needed to justify any of the steps?

Answer 1

The property that is not needed to justify any of the steps is the Commutative Property of Addition.

OR

In the given solution, all the steps involve basic algebraic operations like addition, subtraction, and multiplication, and no specific mathematical property is explicitly mentioned or needed to justify the steps. The solution proceeds by simplifying both sides of the equation through these basic operations.

So, there is no specific mathematical property needed to justify any of the steps in the solution.

Explanation: