Respuesta :

mhanifa

Answer:

  • x = 9, x = 0, x = -14, x = 27, x = 12

Step-by-step explanation:

#1  

  • -9x + 1 = -80
  • -9x = -81
  • x = -81/-9
  • x = 9

#2  

  • 6x - 7 = -7
  • 6x = 7 - 7
  • 6x = 0
  • x = 0

#3

  • 20 - 6x = 104
  • 6x = 20 - 104
  • 6x = -84
  • x = -84/6
  • x = - 14

#4

  • x/9 - 1 = 2
  • x/9 = 2 + 1
  • x/9 = 3
  • x = 3*9
  • x = 27

#5

  • 8 + x/-4 = 5
  • 8 - x/4 = 5
  • x/4 = 8 - 5
  • x/4 = 3
  • x = 3*4
  • x = 12

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