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саша3962
@саша3962
August 2022
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Упростите выражения и найдите его значение 14а-12б-а-б ,если а =2/7 b=-5/7
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rubilovalex
14a-12b-a-b=13a-13b=13*(a-b). подставляем значения: 13*(2/7-(-5/7))=13*(2/7+5/7)=13*1=13. Ответ: 13.
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