mgarcia348 mgarcia348
  • 15-09-2020
  • Mathematics
contestada

3[–x + (2 x + 1)] = x – 1

Respuesta :

ZJSG09112007
ZJSG09112007 ZJSG09112007
  • 15-09-2020

Answer:

x = -2

Step-by-step explanation:

[tex]3[-x + (2 x + 1)] = x -1\\\\\mathrm{Expand\:}3\left(-x+\left(2x+1\right)\right):\quad 3x+3\\3x+3=x-1\\[/tex]

Collect like terms

[tex]3x -x =-1-3[/tex]

Add similar elements

[tex]2x = -4\\\\\mathrm{Divide\:both\:sides\:by\:}2\\\frac{2x}{2}=\frac{-4}{2}\\\\Simplify\\\\x = -2[/tex]

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