tarargordon tarargordon
  • 20-06-2021
  • Mathematics
contestada

Use the substitution method or the elimination method to solve the following system.
2x−20y
=
10
−7x+70y
=
−35

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 22-06-2021

9514 1404 393

Answer:

  x -10y = 5 . . . . . infinite number of solutions

Step-by-step explanation:

We can put each equation into standard form by dividing it by its x-coefficient.

  x -10y = 5 . . . . first equation

  x -10y = 5 . . . . second equation

Subtracting the second equation from the first eliminates the x-variable to give ...

  (x -10y) -(x -10y) = (5) -(5)

  0 = 0 . . . . . . . true for all values of x or y

The system has an infinite number of solutions. Each is a solution to ...

  x -10y = 5.

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