myhkieu31057 myhkieu31057
  • 22-07-2021
  • Mathematics
contestada

| 3 x - 2 | = 4x + 4

Respuesta :

Angelina010001
Angelina010001 Angelina010001
  • 22-07-2021

Answer: -2/7

|3x - 2| - 4x = 4

1) (3х - 2) - 4х = 4, if 3x - 2 >= 0

2) -(3x - 2) - 4x = 4, if 3x - 2 < 0

1)

3х - 4х = 4 + 2

-x = 6

x = -6

3х - 2 >= 0

3х >= 2

x >= 2/3 - wrong

2)

-3х + 2 - 4х = 4

-7х = 2

x = -2/7

3x-2<0

3x<2

3(-2/7)<2-right

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