Предмет: Математика, автор: Ирина3461

Решите пожалуйста уравнение

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Автор ответа: NastyaWonderfull

0

(12y+30)(1.4-0,7y)=0
/
12y+30=0 или 1,4-0,7y=0
12y=0-30 0,7y=1,4-0
12y=-30 0,7y=1,4
y=-30:12 y=1,4:0,7
y=-2.5 y=2
Ответ:2;-2,5

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