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Mathematics 29 Online
OpenStudy (anonymous):

@sammixboo

OpenStudy (anonymous):

i need help!!

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

Find the reciprocal of the number. Multiply to check your answer. 2 3/4

OpenStudy (anonymous):

the number is 2 3/4

OpenStudy (solomonzelman):

2 3/4 = ((2 \(\normalsize\color{roya ue}{ \times }\) 4) +3)/4 rewrite as an improper fraction first.

OpenStudy (anonymous):

5/4?

OpenStudy (solomonzelman):

11/4 is what you get as an improper fraction.

OpenStudy (solomonzelman):

then flip it over.

OpenStudy (solomonzelman):

what will your answer be?

OpenStudy (anonymous):

4/11

OpenStudy (anonymous):

got more

OpenStudy (solomonzelman):

that is it

OpenStudy (anonymous):

Divide. รท

OpenStudy (solomonzelman):

you found the reciprocal

OpenStudy (solomonzelman):

4/11 is the answer

OpenStudy (anonymous):

divide 5/8 divide 3/4

OpenStudy (solomonzelman):

new question?

OpenStudy (anonymous):

yes

OpenStudy (solomonzelman):

\(\large\color{black}{ \frac{\LARGE 5 }{\LARGE8 } \div\frac{\LARGE 3 }{\LARGE4 } }\) like this?

OpenStudy (anonymous):

if you want a other medal ill close this and make a other one ok!

OpenStudy (anonymous):

yep

OpenStudy (solomonzelman):

No, I don't care about medals

OpenStudy (anonymous):

ok

OpenStudy (solomonzelman):

I will reply to this question here

OpenStudy (anonymous):

ok

OpenStudy (solomonzelman):

\(\large\color{black}{ \frac{\LARGE 5 }{\LARGE8 } \div\frac{\LARGE 3 }{\LARGE4 } }\). the rule is that the fraction you are dividing by (in this case 3/4), you FLIP IT, and multiply by it. So it will become: \(\large\color{black}{ \frac{\LARGE 5 }{\LARGE8 } \times\frac{\LARGE 4 }{\LARGE3 } }\). understand?

OpenStudy (anonymous):

ok so it is 20/24?

OpenStudy (anonymous):

then i have to change it to a improper fraction ya?

OpenStudy (solomonzelman):

YES! (if you want to multiply and only then, cancel the terms out. you can cancel things out first) not that this matters much. this is correct. now, reduce the fraction.

OpenStudy (solomonzelman):

it is already an improper fraction

OpenStudy (solomonzelman):

reduce it. (I will be posting some relevant info, but you reduce the fraction as I do this. Hint: 20 and 24 are divisible by 4)

OpenStudy (anonymous):

so it would be 2 2/15

OpenStudy (solomonzelman):

what are you trying to do?

OpenStudy (solomonzelman):

20/24. divide top and bottom by 4, you get?

OpenStudy (anonymous):

5/6

OpenStudy (solomonzelman):

yes

OpenStudy (anonymous):

ok!!

OpenStudy (solomonzelman):

\(\large\color{black}{ \frac{\LARGE A }{\LARGE B } }\). When A>B then, it is an improper fraction: For example: \(\large\color{black}{ \frac{\LARGE 9 }{\LARGE 5 } }\), \(\large\color{black}{ \frac{\LARGE 100}{\LARGE 77 } }\), \(\large\color{black}{ \frac{\LARGE 3 }{\LARGE 2 } }\) and on... When B>A then, it is just a fraction: For example: \(\large\color{black}{ \frac{\LARGE 4 }{\LARGE 5 } }\), \(\large\color{black}{ \frac{\LARGE 19}{\LARGE 76 } }\), \(\large\color{black}{ \frac{\LARGE 3 }{\LARGE 11 } }\) and on...

OpenStudy (solomonzelman):

Just posting the explanation for what `improper fraction` (simply a) `fraction`

OpenStudy (solomonzelman):

A mixed number is: \(\large\color{black}{ C\frac{\LARGE a }{\LARGE b } }\) For example, \(\large\color{blue}{ 4\frac{\LARGE 3 }{\LARGE 5 } }\) \(\large\color{blue}{ 2\frac{\LARGE 1}{\LARGE 17 } }\) \(\large\color{blue}{ 1\frac{\LARGE 17 }{\LARGE 18 } }\) \(\large\color{blue}{ 4\frac{\LARGE 3 }{\LARGE 5 } }\) \(\large\color{blue}{ 100\frac{\LARGE 234 }{\LARGE 247 } }\) and etc...

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