simonperez324
simonperez324 simonperez324
  • 10-11-2018
  • Mathematics
contestada

Can someone please help me ?

Can someone please help me class=

Respuesta :

tonb
tonb tonb
  • 10-11-2018

If you add both equations, the -3y cancels out the +3y, so you get:

x + 5x = 13 - 7

which simplifies to

6x = 6

so

x=1

Then substitute that in the first, to find y:

1 - 3y = 13

3y = -12

y = -4

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