2000160294 2000160294
  • 09-12-2020
  • Mathematics
contestada

Solve by the elimination method. Show your work
2x – 5y = 1
3x – 4y = -2

Respuesta :

ramalmlki
ramalmlki ramalmlki
  • 10-12-2020

Answer:

[tex]\boxed{x = -2~~and~~y = -1}[/tex]

Step-by-step explanation:

2x - 5y = 1   (times 3) 6x - 15y = 3

3x - 4y = -2 (times 2) 6x - 8y = -4

.

6x - 15y = 3

6x - 8y = -4    

-7y = 7

[tex]y = \frac{7}{-7}[/tex]

y = -1

.

Substitute the value of y to one of equations

2x - 5y = 1

2x - 5(-1) = 1

2x + 5 = 1

2x = 1 - 5

2x = -4

[tex]x = \frac{-4}{2}[/tex]

x = -2

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