csteinbergher
csteinbergher csteinbergher
  • 17-04-2019
  • Mathematics
contestada

|5x−7| =3 help please

Respuesta :

angelyna27
angelyna27 angelyna27
  • 17-04-2019

Answer:

x=2 or x= 4/5

Step-by-step explanation:

Negative case: -(5x-7) = 3  

Multiply

-5x+7 = 3  

Rearrange and Add up

-5x = -4  

Divide both sides by 5  

-x = -(4/5)  

Multiply both sides by (-1)  

x = (4/5)  

 

Then find the positive case: (5x-7) = 3  

Rearrange and Add up

5x = 10  

Divide both sides by 5  

x = 2  

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