ltrunganh33 ltrunganh33
  • 23-07-2021
  • Mathematics
contestada

a) |9+x|=2x
b) |x+6|=2x+9

Respuesta :

JoyMark
JoyMark JoyMark
  • 23-07-2021

Answer:

a) 9

b) -3

Step-by-step explanation:

a)

|9+x|=2x

9 + x = 2x

   - x    -x

---------------

 9   =    x

b)

|x+6|=2x+9

x +6 = 2x +9

-x          -x

     6 = x + 9

    -9         -9

    --------------

       -3 = x

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