leah666555
leah666555 leah666555
  • 19-10-2020
  • Mathematics
contestada

Solve for x.

y=7x−7z−9

Respuesta :

vaughnjustin649
vaughnjustin649 vaughnjustin649
  • 19-10-2020

Answer:

[tex]x=\frac{y+7z+9}{7}[/tex]

Step-by-step explanation:

[tex]7x-7z-9=y[/tex]

[tex]7x-7z-9+7z=y+7z[/tex]

[tex]7x-9=y+7z[/tex]

[tex]7x-9+9=y+7z+9[/tex]

[tex]7x=y+7z+9[/tex]

[tex]\frac{7x}{7}=\frac{y}{7}+\frac{7z}{7}+\frac{9}{7}[/tex]

[tex]x=\frac{y+7z+9}{7}[/tex]

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