Question

3 4/21 - 5 1/12 - （- 4 5/14）помогите пожалуйста
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Answer 1

$3 \frac{4}{21} - 5 \frac{1}{12} - ( - 4 \frac{5}{14} ) = \frac{67}{21} - \frac{61}{12} + 4 \frac{5}{14} = \frac{67}{21} - \frac{61}{12} + \frac{61}{14} = \frac{69}{28} = 2 \frac{13}{28}$