Rules regarding FRACTIONS

Hi there In the first example you have: \(\frac{a}{\frac{b}{c}}\) Rewrite: \(\frac{a}{\frac{b}{c}}=a\div \frac{b}{c}\) Flip b/c and multiply \(a\times \frac{c}{b}\) Multiply the numerators together: \(\frac{a}{1}\times \frac{c}{b}=\frac{a\cdot c}{b}\) ======================= Here's another example: \(\frac{\frac{a}{b}}{c}\) Think of it like this: \(\frac{\frac{a}{b}}{c}=\frac{a}{b}\div c\) Remember, c can be written as a fraction, c over 1: \(\frac{a}{b}\div \frac{c}{1}\) NOW, flip the second fraction and change to multiply \(\frac{a}{b}\times \frac{1}{c}\) As you can see now, the denominators multiply: \(\frac{a}{b\cdot c}\) Hope that helps