A fraction that is equivalent to \(\frac{a}{b}\) will have the form \(\frac{a\times A}{b\times B}\), where A and B are equivalent and factors that are multiplied in.
The product fraction should be easily simplified using A and B to get the original fraction.
In the case of your fraction \(\frac{7}{10}\) you will need to find a fraction which is a product of this: \(\frac{7\timesA}{10\timesB},A=B\)
