tex]Вот... Можете поскорее, пожалуйста?!...

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Помогите решить! Это срочно!

[tex]14-13,2:( 3 \frac{11}{21}-2 \frac{4}{15}) [/tex]

Вот... Можете поскорее, пожалуйста?!

Artem112

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$14-13,2:( 3 \frac{11}{21}-2 \frac{4}{15}) =
14-13,2:( \frac{74}{21}- \frac{34}{15}) =
\\\
=14-13,2:( \frac{370}{105}- \frac{238}{105}) =
14-13,2: \frac{132}{105}=
\\\
=14- \frac{132}{10}\cdot \frac{105}{132}=14- 10.5=3.5$

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кляча

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Решено по действиям.
1)74/21 - 34/15 = 370/105 -238/105 = 132/105
2) 132/10 : 132/105 = 10,5
3) 14 - 10,5 = 3,5

1 votes Thanks 1

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