HELPMEEEEEEEEEEEEE

The first sentence is written correctly.

Parentheses act like comma's for an appositive in a sentence encloses additional, unneeded information.

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X= Price of adults

1/2X= Price of kids

7 * 1/2X + 3X= 13/2X= $63

X=126/13= $9.692307692

1/2X= 63/13= $4.846153846

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Yeah! No problem...sorry if it seemed like I was being rude or anything...

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This problem was meant to show the person that the commutative property doesn't work for subtraction. If they check it themselves then they would understand it better.

Let me clear this up... the commutative property is a+b=b+a this only works for addition and multiplication.

In the problem, we'll call -56, a, and -40, b. a-b= -56 - (-40)= -56+40= -16; b-a= -40 - (-56)= -40 + 56= 16. This shows that a-b does not equal b-a.

I'm not saying there are no solutions... You said

"Commutative Property: 40-56=-16

So, we know our work is correct!"

You can't use the commutative property to show that your work is correct for subtraction. 40-56= -16 is correct, but that isn't the commutative property which I think is the source of our confusion.

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The two numbers are -56 and -40, when using a property you don't simplify -(-40) to 40 because that changes your proof.

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Edit:

Based on what you're saying, one might confuse that you just proved that the commutative property works for subtraction when in fact it doesn't.

For question 1 is says "Express your answer in simplest radical form."