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Mathematics 15 Online
OpenStudy (anonymous):

Solve and check. 7 and 3/4=x/8 A.1/4 B.62 C.1/62 D.4

OpenStudy (liv1234):

I can help!(:

OpenStudy (anonymous):

ok

OpenStudy (liv1234):

Okay, so what do you think the first step is?

OpenStudy (anonymous):

divide

OpenStudy (liv1234):

Why do you think we should divide?

OpenStudy (anonymous):

cause it is almost the same as the last one and you told me i should divide the numbers they give you

OpenStudy (liv1234):

The first thing we should do is turn the mixed number 7 and 3/4 into a fraction.

OpenStudy (fairegaming):

C?

OpenStudy (anonymous):

ok

OpenStudy (liv1234):

No^ please don't just throw out random guesses. And @doopy I'll help you convert it

OpenStudy (fairegaming):

Dont take my word. Please don't.

OpenStudy (liv1234):

So, to convert it into a fraction you have to multiply the denominator by 7 and then add 3 to what you get.

OpenStudy (fairegaming):

Liv, Ill let you take care of it but just know that I can do wutever I want..

OpenStudy (liv1234):

Okay, I'm just trying to help.

OpenStudy (anonymous):

31

OpenStudy (liv1234):

Correct! @doopy

OpenStudy (liv1234):

But we keep the denominator the same, so it would be 31/4. Do you understand so far?

OpenStudy (anonymous):

yes

OpenStudy (liv1234):

Okay, do you know what we do next?

OpenStudy (anonymous):

no i am terrible with fractions

OpenStudy (liv1234):

Remember we still have the x/8 so keep that in mind for when we are solving for the final answer.

OpenStudy (liv1234):

And don't worry, I used to be terrible with them, but they aren't so hard once you get the hang of them.(:

OpenStudy (anonymous):

ok thanks

OpenStudy (liv1234):

So, notice how we now have 31/4=x/8, right?

OpenStudy (anonymous):

yes

OpenStudy (liv1234):

What do you have to multiply 4 by to get 8?

OpenStudy (anonymous):

2

OpenStudy (liv1234):

Correct! Now do you see what we're gonna do with 31?

OpenStudy (anonymous):

multiply by 2

OpenStudy (liv1234):

Correct!! So, what is 31*2?

OpenStudy (anonymous):

62

OpenStudy (liv1234):

Correct again! Now you have your answer!! x=62. B is the correct answer.(: Awesome job. And tag me if you have any other questions. I'm happy to help ^~^

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