Question

решите пример ..
$6 \frac{2}{5} \times1 \frac{9}{16} - (2 \frac{1}{4} ) {}^{2}$
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Answer 1

$6\frac{2}{5}*1\frac{9}{16}-(2\frac{1}{4})^2=\frac{32}{5}*\frac{25}{16}-(\frac{9}{4})^2=2*5-\frac{81}{16}=10-\frac{81}{16}=\frac{79}{16}=4\frac{15}{16}$

Answer 2

Ответ:

$4 \frac{15}{16}$

Пошаговое объяснение:

$6 \frac{2}{5} \times 1 \frac{9}{16} = \frac{32}{5} \times \frac{25}{16} = \frac{2}{1} \times \frac{5}{1} = 10$

$10 - ( {2 \frac{1}{4} )}^{2} = 10 - \frac{81}{16} = 10 - \frac{81}{16} = \frac{79}{16} = 4 \frac{15}{16}$