Respuesta :

aespinoza3

Answer:

x = 6

Step-by-step explanation:

  • Pull out like factors:

-4x - 13  =   -1 • (4x + 13)

  • Equation at the end of step 2:

 -178 -  (-5x +  -4 • [4x + 13] )  = 0

  • Pull out like factors:

  21x - 126  =   21 • (x - 6)

  • Equation at the end of step 4:

 21 • (x - 6)  = 0

  • Solve:

x-6 = 0  

  • Add 6 to both sides of the equation:

x = 6

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