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Ответ:

taesthetic11

13.11.2022

Mathematics

a = 11.2

Step-by-step explanation:

$15/7 :(1.5a)= 5/14 :0.8 = \\ \frac{\frac {15}{7} }{1.5a} = \frac{ \frac{5}{14} }{0.8} \\ \frac {1.5a \times 5}{14} = \frac{0.8 \times 15}{7} \\7(1.5a \times 5) = 14(0.8 \times 15)\\a = \frac {7(0.8 \times 15)} {1.5 \times 5}\\a = \frac {84} {7.5}=11.2$

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