BIKING In order to train for a cross-state biking trip, Julie rides her bike 34.75 miles five times a week. How many total miles does she ride each week?

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Ответ:

jemseidle8889

14.09.2020

Mathematics

-3

Step-by-step explanation:

The given expression is:

$\frac{\frac{a-3}{7} }{\frac{3-a}{21} }$

We can rewrite this as:

$\frac{a-3}{7}\div \frac{3-a}{21}$

$\frac{a-3}{7}\times \frac{21}{3-a}$

Factor -1 out of the first numerator:

$\frac{-(3-a)}{7}\times \frac{21}{3-a}$

Cancel out the common factors;

$\frac{-1}{1}\times \frac{3}{1}=-3$

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