Предмет: Алгебра, автор: zhiguliovaanna

упростите выражения 2,3(3x-1)-13,4 и найдите его значение при x=3,5
помогите
это очень важно

Ответы

Автор ответа: вьетнамец

0

2.3(3*3.5-1)-13.4=2.3*9.5-13.4=21.85-13.4=8.45

Автор ответа: Kopycat

0

2,3(3х-1)-13,4=6,9х-2,3-13,4=6,9х-15,7=6,9*3,5-15,7=24,15-15,7=8,45

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