Question

Urgent va rog dau coroană
A,B,D,E va rog ​

Answer 1

Explicación paso a paso:

$A = ( \frac{6}{5} + \frac{2}{5} ). \frac{1}{4} \\ A = ( \frac{6 + 2}{5} ). \frac{1}{4} \\ A = \frac{8}{5} . \frac{1}{4} \\ A = \frac{2 \times 4}{5} . \frac{1}{4} \\ A = \frac{2}{5}$

$B = ( \frac{7}{5} + \frac{4}{15}). \frac{3}{2} \\ B = ( \frac{7 \times 3}{5 \times 3} + \frac{4}{15} ). \frac{3}{2} \\ B = ( \frac{21}{15} + \frac{4}{15} ). \frac{2}{3} \\ B = ( \frac{25}{15} ). \frac{2}{3} \\ B = \frac{5}{3} . \frac{2}{3} \\ B = \frac{10}{9}$

$D=( \frac{2}{5} - \frac{6}{5} ). \frac{1}{4} \\ D=( - \frac{4}{5} ). \frac{1}{4} \\ D= - \frac{1}{5}$

$E=( \frac{7}{5} - \frac{4}{15} ).( - \frac{3}{2} ) \\ E=( \frac{21}{15} - \frac{4}{15} ).( - \frac{3}{2} ) \\ E=( \frac{17}{15} ).( - \frac{3}{2} ) \\ E= - \frac{17}{10}$