Hadizaali14 Hadizaali14

11-09-2018
Mathematics

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Solve the inequality and graph the solution |7x-7|+2<23

Respuesta :

14-09-2018

[tex]|7x-7|+2 < 23\ \ \ \ \ |-2\\\\|7x-7| < 21\iff7x-7 < 21\ \wedge\ 7x+7 > -21\ \ \ \ \ \ |+7\\\\7x < 28\ \wedge\ 7x > -14\ \ \ \ \ \ \ |:7\\\\x < 4\ \wedge\ x > -2\\\\-2 < x < 4[/tex]

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