denzelio13 denzelio13
  • 14-01-2019
  • Mathematics
contestada

How many solutions does the following equation have? 20zāˆ’5āˆ’12z=10z+8

Respuesta :

gmany
gmany gmany
  • 06-08-2019

Answer:

One solution: z = -6.5

Step-by-step explanation:

[tex]20z-5-12z=10z+8\qquad\text{combine like terms}\\\\(20z-12z)-5=10z+8\\\\8z-5=10z+8\qquad\text{add 5 to both sides}\\\\8z=10z+13\qquad\text{subtract}\ 10z\ \text{from both sides}\\\\-2z=13\qquad\text{divide both sides by (-2)}\\\\z=-6.5[/tex]

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