Question

Find the value of r such that

\frac{r^2 - 5r + 4}{r^2 - 8r + 7} = \frac{r^2 - 2r - 15}{r^2 - r}

Answer 1

fracr261587r

Explanation:

\frac = r 2

2r - 15r 2 - r

r = r + r - 7 + 5 r 2