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Salvador Vera

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6 CAPÍTULO 1. CONCEPTOS BÁSICOS<br />

a) Consideremos el caso x+3 > 0. Al ser x+3 positivo podemos multiplicar<br />

ambos miembros de la desigualdad por x + 3, manteniendo el sentido de la<br />

misma. Co lo que resulta,<br />

x +3> 0<br />

2x − 3<br />

x +3<br />

< 1<br />

2<br />

<br />

<br />

x>−3<br />

4x − 6

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