[tex]1.6(x + 5) - 5x = 25 \\ \\ 1.6x + 8 - 5x = 25 \\ \\ - 3.4x + 8 = 25 \\ \\ - 3.4x = 25 - 8 \\ \\ - 3.4x = 17 \\ \\ x = \frac{17}{ - 3.4} \\ \\ x = - 5[/tex]
Verificamos remplazando X en la ecuación
[tex]1.6( - 5 + 5) - 5( - 5) = 25 \\ \\ 25 = 25[/tex]
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[tex]1.6(x + 5) - 5x = 25 \\ \\ 1.6x + 8 - 5x = 25 \\ \\ - 3.4x + 8 = 25 \\ \\ - 3.4x = 25 - 8 \\ \\ - 3.4x = 17 \\ \\ x = \frac{17}{ - 3.4} \\ \\ x = - 5[/tex]
Verificamos remplazando X en la ecuación
[tex]1.6( - 5 + 5) - 5( - 5) = 25 \\ \\ 25 = 25[/tex]