Question

срочно срочно срочно срочно !!!! заполните таблицу …

Answer 1

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$x + y = - 25.7 + ( - 13 frac{3}{4} ) = - 25.7 - 13.75 = - 39.45$
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$- 17 frac{1}{2} - 6.5 = - 17.5 - 6.5 = - 24$
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$- 8.8 - 13 frac{5}{7} = - 8 frac{4}{5 } - 13 frac{5}{7} = - 21 frac{4 times 7 + 5 times 5}{35} = - 21 frac{28 + 25}{35} = - 21 frac{53}{35} = - 22 frac{18}{35}$
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$- 2 frac{4}{15} - 4 frac{7}{12} = - 6 frac{4 times 4 + 7 times 5}{60} = - 6 frac{16 + 35}{60} = - 6 frac{51}{60} = - 6 frac{17}{20}$
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$- 6.25 - 15 frac{1}{4} = - 6.25 - 15.25 = - 21.50 = - 21.5$
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$- 0.09 - 8.2 = - 8.29$