Предмет: Алгебра, автор: gaga1701

Математика, помогите

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Автор ответа: sedinalana

7x-12=0⇒x=12/7 U 7x-11=0⇒x=11/7
1)x<11/7
-7x+12+7x-11=1
0=0
x<11/7
2)7/11≤x≤12/7
-7x+12-7x+11=1
14x=22
x=11/7
3)x>12/7
7x-12-7x+11=1
0=2
нет решения
Ответ x∈(-∞;11/7]

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