Предмет: Алгебра, автор: Аноним

Система неравенств,пожалуйста...

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Автор ответа: 007gaglik

2

1) -x<7
x>-7
(-7;+∞)
2)3x>-18
x>-6
(-6;+∞)
3)-0.4x>-4.4
x<11
(-∞;11)
4)0.4x<3
x<7.5
(-∞;7.5)
5)-2/21x>2/42
x<-0.5
(-∞;-0.5)

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