asmazainab86
asmazainab86 asmazainab86
  • 16-07-2016
  • Mathematics
contestada

2. −( x+2)= 2(3x-6)

3. -5(3-4x)=-6+20x-9

need help

Respuesta :

youmnatouqeer youmnatouqeer
  • 16-07-2016
2.simplify it and find the value of variable
-x-2=6x-12
6x+x=12-2
7x=10
x=10/7
Answer Link
Panoyin
Panoyin Panoyin
  • 16-07-2016
  -(x + 2) = 2(3x - 6)
-(x) - (2) = 2(3x) - 2(6)
     -x - 2 = 6x - 12
   + x        + x
          -2 = 7x - 12
      + 12        + 12
         10 = 7x
          7      7
        1³/₇ = x

   -5(-4x + 3) = 20x - 6 - 9
-5(-4x) - 5(3) = 20x - 15
       20x - 15 = 20x - 15
     - 20x         - 20x
               -15 = -15
Answer Link

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