$${\frac{{\mathtt{2}}}{{\mathtt{5}}}} = {\frac{{\mathtt{2}}}{{\mathtt{3}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{r}}}{{\mathtt{5}}}}$$
could someone give me a step by step instruction on how to do this? Thank you!
subtract 2/3 from both sides
then
multiply both sides by -5
