Simplify 21/30?

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Jim G. Share
Oct 11, 2017

Answer:

$\frac{7}{10}$

Explanation:

$\text{to simplify a fraction}$

$\textcolor{b l u e}{\text{cancel"" any"color(blue)" common factors}}$
$\text{on the numerator/denominator}$

$\text{ 3 is a common factor to both 21 and 30}$

$\Rightarrow \frac{21}{30}$

$= {\cancel{21}}^{7} / {\cancel{30}}^{10} \leftarrow \textcolor{red}{\text{ cancelling}}$

$= \frac{7}{10} \leftarrow \textcolor{red}{\text{ in simplest form}}$

A fraction is in simplest form when no other factor but 1 will divide into the numerator/denominator.

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Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

1
Oct 11, 2017

Answer:

$\frac{21}{30} = \frac{7}{10}$

Explanation:

Dividing top and bottom by $3$, I got $\frac{7}{10}$

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