senpai1738 senpai1738
  • 17-02-2021
  • Mathematics
contestada

x+y = -16
—3х – у = 30

Respuesta :

epicmathmoment epicmathmoment
  • 17-02-2021

Answer:

x = -7, y = -9

Step-by-step explanation:

The coefficient (the number before) the y is the same but the signs are opposite so add the equations together:

x-3x+y-y=-16+30

-2x=14

x=-7

y=-16-x=-16--7=-9

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