Question

Помогите срочно даю 20 балов​

Answer 1

Пошаговое объяснение:

$( \frac{7(5)}{12(5)} - \frac{8(4)}{15(4)})^{2} + \frac{4}{5} \times ( \frac{7(8)}{10(8)} - \frac{9(5)}{16(5)} = ( \frac{35}{60} - \frac{32}{60})^{2} + \frac{4}{5} \times ( \frac{56}{80} - \frac{45}{80}) = ( \frac{3}{60})^{2} + \frac{4}{5} \times \frac{11}{80} = ( \frac{1}{20}) ^{2} = \frac{1}{400} + \frac{11(4)}{100(4)} = \frac{1}{400} + \frac{44}{400} = \frac{45}{400} = \frac{9}{80}$