Seudónimo Seudónimo
  • 22-11-2020
  • Mathematics
contestada

-3(5x - 7) = -4x + 3(3x + 7)

Respuesta :

jimrgrant1 jimrgrant1
  • 22-11-2020

Answer:

x = 0

Step-by-step explanation:

Given

- 3(5x - 7) = - 4x + 3(3x + 7) ← distribute parenthesis on both sides

- 15x + 21 = - 4x + 9x + 21 , that is

- 15x + 21 = 5x + 21 ( subtract 5x from both sides )

- 20x + 21 = 21 ( subtract 21 from both sides )

- 20x = 0 , thus

x = 0

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