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user0396
@user0396
August 2022
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№3. Упростите выражение 8,19+а+(-5,8)+(-3,19)+5,8 и найдите его значение, если а=-23/7.
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Sanyasha
Verified answer
8,19+а+(-5,8)+(-3,19)+5,8=8,19+(-3,19)+5,8+(-5.8)+а=(8,19-3,19)+(
5,8-5.8)+а=5+0+а=5+а
Если
а=-23/7, то:
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8,19+а+(-5,8)+(-3,19)+5,8=8,19+(-3,19)+5,8+(-5.8)+а=(8,19-3,19)+(5,8-5.8)+а=5+0+а=5+аЕсли а=-23/7, то: