Решите пропорцию, используя ее свойство:
[tex]a \div ( - 1 \frac{2}{5}) = 2 \frac{1}{7} \div ( - 10) [/tex]
[tex]a \div ( - 1 \frac{2}{5}) = 2 \frac{1}{7} \div ( - 10) [/tex]
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Ответ:
Пошаговое объяснение:
-10 * a = -1 2/5 * 2 1/7
-10 * a = -7/5 * 15/7
-10 * a = -3
a = -3 : (-10)
a = 3/10