jaheim619 jaheim619
  • 11-02-2018
  • Mathematics
contestada

5x+2y=-4
-x+2y=8
Solve the system

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sqdancefan
sqdancefan sqdancefan
  • 15-02-2018
Subtract the second equation from the first.
.. (5x +2y) -(-x +2y) = (-4) -(8)
.. 6x = -12
.. x = -2

.. -(-2) +2y = 8
.. 2y = 6
.. y = 3

The solution is (x, y) = (-2, 3).
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