Question

Va rog ex 2(a) repedeeee

Answer 1

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Answer 2

$- 1 \frac{4}{5} - ( - 3 \frac{7}{10}) - ( + 2 \frac{8}{15}) = - \frac{1 \times 5 + 4}{5} - ( - 3 \frac{7}{10}) - + 2 \frac{8}{15} = - \frac{9}{5} - ( - 3 \frac{7}{10}) - + 2 \frac{8}{15} = - \frac{9}{5} - ( - \frac{3 \times 10 + 7}{10}) - + 2 \frac{8}{15} = - \frac{9}{5} - ( - \frac{37}{10}) - + 2 \frac{8}{15} = - \frac{9}{5} - ( - \frac{37}{10}) - + \frac{2 \times 15 + 8}{15} = - \frac{9}{5} - ( - \frac{37}{10}) - + \frac{38}{15} = - \frac{9}{5} + \frac{37}{10} - \frac{38}{15} = - \frac{9 \times 6}{5 \times 6} + \frac{37 \times 3}{10 \times 3} - \frac{38 \times 2}{15 \times 2} = - \frac{54}{30} + \frac{111}{30} - \frac{76}{30} = \frac{ - 54 + 111 - 76}{30} = - \frac{19}{30}$