Respostas

  • Usuário do Brainly
2013-12-09T00:56:12-02:00
A) x - 18 < - 23
x < - 23 + 18
x < - 5

U = Q ; x < - 5

b) 11 - 9x > - 2x
- 9x + 2x > - 11
- 7x > - 11 .(-1)
7x < 11
x < 11/7

U = Q; x < 11/7
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