LiyahWasHere15 LiyahWasHere15

01-11-2015
Mathematics

contestada

What is the solution to the system of linear equations y-x=4 and y+2x=1?

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Panoyin Panoyin

02-11-2015

-x + y = 4
2x + y = 1
   -3x = 3
      -3 -3
      x = -1
2x + y = 1
2(-1) + y = 1
   -2 + y = 1
   + 2    + 2
   y = 3
(x, y) = (-1,3)

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