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Автор - android774

помогите плиз а то я не знаю​

Ответ

Проверено экспертом

Автор - sangers1959

Ответ:

Пошаговое объяснение:

5.

1. 3²/₅*1⁴/₇+ 2³/₇*3²/₅=3²/₅*(1⁴/₇+2³/₇)=(17/5)*4=68/5.

2. 13³/₅*¹/₂=(68/5)*(1/2)=68/10.

3. 68/5-68/10=68/10.

6.

Так как 37 и 11 - простые числа    ⇒

37*11=407.

407*2=814.

∑=407+814=1221.

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