twinEndshessa twinEndshessa
  • 11-12-2016
  • Mathematics
contestada

Solve the equation for x:

|2x - 5| - 4 = -3

Hint: There will be two answers.


Respuesta :

SJ2006
SJ2006 SJ2006
  • 11-12-2016
|2x - 5| - 4 = -3
As it is under the Mod. it would be either:
2x-5-4 = -3  OR  2x+5-4 = -3
2x-9 = -3  OR  2x + 1 = -3
2x = 9-3  OR  2x = -3-1
2x = 6  OR  2x = -4
x = 6/2  OR  x = -4/2
x = 3  OR  -2

So, the answers would be 3 & -2.

Hope this helps!

Answer Link
AOMTH
AOMTH AOMTH
  • 11-12-2016
2x-5-4=3
2x-9=3
2x=3+9
2x=12
x=6

2x-5-4=-3
2x-9=-3
2x=-3+9
2x=6
x=3

The answers are 6 and 3
Answer Link

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