exek07172
exek07172 exek07172
  • 14-08-2017
  • Mathematics
contestada

Solve by the linear combination method.

8x + 2y = 4
–4x + 3y = –10

Respuesta :

morgangaumont23
morgangaumont23 morgangaumont23
  • 14-08-2017
(1, -2)


hope this helps


Answer Link
texaschic101
texaschic101 texaschic101
  • 14-08-2017
8x + 2y = 4
-4x + 3y = -10....multiply by 2
--------------------
8x + 2y = 4
-8x + 6y = -20 (result of multiplying by 2)
-------------------add
8y = - 16
y = -16/8
y = -2

8x + 2y = 4
8x + 2(-2) = 4
8x - 4 = 4
8x = 4 + 4
8x = 8
x = 8/8
x = 1

solution is (1,-2)
Answer Link

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