Fordson High School hosted a math competition. A student completed the following proof and the question was marked in correct. Identify and correct the students mistake (s)

I know that these are the mistakes

One - that (2x-5) + 3x = (-5+2x) + 3x is communative property of addition

And two - that - 5+x (2+3) = x (2+3) - 5 is accociative property of addition. What are the actual properties?

Question

Deegan Lowe

Mathematics

29 October, 09:06

Fordson High School hosted a math competition. A student completed the following proof and the question was marked in correct. Identify and correct the students mistake (s)

I know that these are the mistakes

One - that (2x-5) + 3x = (-5+2x) + 3x is communative property of addition

And two - that - 5+x (2+3) = x (2+3) - 5 is accociative property of addition. What are the actual properties?

+4

Answers (1)

Know the Answer?

Jonathan Houston · Answer 1

What makes it incorrect is the wrong match of the properties. The correct answer is actually the opposite. The first expression is a manifestation of associative property while the second expression is a manifestation of commutative property.

Commutative property is the arrangement of order of algebraic terms. Associative property is the arrangement of order within a grouped quantity.