(x + 5) pertenece al intervalo [ - 6 ; 4 ]
-----------------------------------------------------------
- 6 ≤ x + 5 ≤ 4
Restamos 5 a todo
- 6 - 5 ≤ x + 5 - 5 ≤ 4 - 5
- 11 ≤ x ≤ - 1
Entonces
x pertenece al intervalo [ - 11 ; - 1 ]
-----------------------------------------------------
eso es todo :D
SALUDOS!!
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(x + 5) pertenece al intervalo [ - 6 ; 4 ]
-----------------------------------------------------------
- 6 ≤ x + 5 ≤ 4
Restamos 5 a todo
- 6 - 5 ≤ x + 5 - 5 ≤ 4 - 5
- 11 ≤ x ≤ - 1
Entonces
x pertenece al intervalo [ - 11 ; - 1 ]
-----------------------------------------------------
eso es todo :D
SALUDOS!!