What is ((a-3)/7)/(\frac{3-a){21}} ?

The solution to ((a-3)/7)/(\frac{3-a){21}} is -3

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simplify ((a-3)/7)/(\frac{3-a){21}}

simplify

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

- 3

Solution steps

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

Apply the fraction rule:

\frac{\frac{a}{b}}{\frac{c}{d}} = \frac{a \cdot d}{b \cdot c}

= \frac{( a - 3 ) \cdot 21}{7 ( 3 - a )}

Cancel

\frac{( a - 3 ) \cdot 21}{7 ( 3 - a )} : - 3

= - 3

2 sin (\frac{x}{2}) cos (\frac{x}{2})

2 \cdot π \cdot 2

\frac{1 - cos ( 2 x )}{sin ( 2 x )}

\frac{2 x ^{2}}{2 x ^{2}}

\frac{2 ^{2}}{2 ^{5}}

What is ((a-3)/7)/(\frac{3-a){21}} ?
The solution to ((a-3)/7)/(\frac{3-a){21}} is -3