Answer 1

Ответ:

$8\frac{1}{3}*9-4\frac{1}{3}*3\frac{1}{4}-12\frac{2}{7}*3\frac{5}{24}=\frac{25}{3}*\frac{27}{3}-\frac{13}{3}*\frac{13}{4}-\frac{86}{7}*\frac{77}{24}=75-14\frac{1}{12}-39\frac{5}{12} =75-(14\frac{1}{12}+39\frac{5}{12})=75-53\frac{6}{12}=75-53.5=21.5$

Пошаговое объяснение:

Answer 2

Ответ:

Пошаговое объяснение:

Answer 3

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