Предмет: Математика, автор: ipatov400

Помогите срочно все 3 уравнения .

Приложения:

Ответы

Автор ответа: trofnastya56878

Ответ:

1. -8m+32=0

-8m=-32

m = -32:(-8)

m= 4

Автор ответа: lizzavettta

2)10n-7n=12+9
3n=21
n=21/3
n=7
3)12x-0,4x=8
11,6x=8
x=8/11,6
x=(примерно)0,69

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