Question

пАмАгитИ!!!!!!!!!!!!!​

Answer 1

$\frac{4m + 7}{3m - 1} - \frac{5}{2m - 1} \div \frac{3m - 1}{4 {m}^{2} - 1} = \frac{4m + 7}{3m - 1} - \frac{5}{2m - 1} \times \frac{4 {m}^{2} - 1}{3m - 1} = \frac{4m + 7}{3m - 1} - \frac{5}{2m - 1} \times \frac{(2m - 1)(2m + 1)}{3m - 1} = \frac{4m + 7}{3m - 1} - \frac{5(2m + 1)}{3m - 1} = \frac{4m + 7 - (10m + 5)}{3m - 1} = \frac{ - 6m + 2}{3m - 1} = \frac{ - 2(3m - 1)}{3m - 1} = - 2$