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Mathematics 7 Online
OpenStudy (anonymous):

Will fan and medal..

OpenStudy (anonymous):

OpenStudy (compassionate):

Plug both the terms into x and y, and see if they equal 21. The ones that equal 21 are your solutions.

OpenStudy (anonymous):

Alright, thanks. I'll have a few more more than likely.

OpenStudy (anonymous):

@Compassionate so ill do like -3*3? for a and 3*4 for the other part of it? Or?..

OpenStudy (compassionate):

Yes! But it's 3(-3) and -4(3)

OpenStudy (anonymous):

So i just need to make sure to put the parenthesis??

OpenStudy (compassionate):

Well, it doesn't matter how you multiply it. Try to do the first one (-3, 3)

OpenStudy (anonymous):

wait.. How did the 4 become a negative?

OpenStudy (compassionate):

You are given 3x - 4y = 21 You are given a number of origins to plug-in. The first one being (-3, 3) Remember; the form is : (x, y) So, if we take 3x - 4y = 21 and plug in the terms, we get: 3(-3) - 4(3) = 21 NOTE: All I did was plugin the terms. x = -3, y = 3

OpenStudy (anonymous):

Alright, hold on.

OpenStudy (anonymous):

It needs to equal 21 not -21 right?

OpenStudy (compassionate):

Yes. Keep plugging in until you find one thats 21

OpenStudy (anonymous):

alright thanks.

OpenStudy (anonymous):

@Compassionate so its B, C, and D??

OpenStudy (compassionate):

Did it equal 21.

OpenStudy (anonymous):

Yeah, thanks.

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