courtiegirl12 courtiegirl12

23-08-2018
Mathematics

contestada

|-7n+4|+9=34

How do you do this?

Respuesta :

konrad509 konrad509

23-08-2018

[tex] |-7n+4|+9=34\\\\
|-7n+4|=25\\\\
-7n+4=25 \vee -7n+4=-25\\\\
7n=-21 \vee 7n=29\\\\
n=-3 \vee n=\dfrac{29}{7} [/tex]

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