Предмет: Алгебра, автор: servingo

Упрастите выражение и найдите его значение
а)5+3y-2x-9y
Б)2(3a-4)+5
В)15а-(а-3)+(2a-1)

Ответы

Автор ответа: Амир626

1

а) 5+3y-2x-9y= 5+(3y-9y)-2x=5-6y-2x

б) 2(3a-4)+5= 6a-8+5=6a-3

в) 15a-(a-3)+(2a-1)=15a-a+3+2a-1=(15a-a+2a)+(3-1)=16a+2

servingo: Блин я ошибся непоально написал надо было только сравнить выражения

servingo: Пофиг уже

servingo: Ненадолго

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