Question

5. Спростіть вираз:срочно

Answer 1

$( - \frac{7}{9} ) \times ( - 8.1) = \frac{7 \times 81}{9 \times 10} = \frac{7 \times 9}{10} = \frac{63}{10} = 6.3$

$5 \frac{2}{5} \times ( - 1 \frac{1}{9} ) = - \frac{27 \times 10}{5 \times 9} = - 3 \times 2 = - 6$