Respuesta :

Bora77

Answer:

[tex]40x = 60(x - 1) \\ \\ 2x = 3x - 3 \\ \\ x = 3 \\ \\ \\ 7 \times \frac{7x}{2} - 29x = - 9 \\ \\ 49x - 58x = - 18 \\ \\ - 9x = - 18 \\ \\ x = 2[/tex]

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mhanifa

Answer:

#1

  • 40x = 60x(x - 1)
  • 40x = 60x² - 60x
  • 60x² - 100x = 0
  • 3x² - 5x = 0
  • x(3x - 5) = 0
  • x = 0 or
  • 3x = 5 ⇒ x = 5/3

#2

  • 7×7x/2 - 29x = - 9
  • 49x/2 - 29x = - 9
  • 49x - 58x  = - 18
  • -9x = -18
  • x = -18/-9
  • x = 2
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