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kodGreya [7K]
3 years ago
8

Solving x + 3y = 5 and -x - y = -3 by eliminationg.

Mathematics
1 answer:
Marina CMI [18]3 years ago
4 0

Answer:

  (x, y) = (2, 1)

Step-by-step explanation:

The x-coefficients are opposites of each other, so the x variable will be eliminated if the two equations are added.

  (x +3y) +(-x -y) = (5) +(-3)

  2y = 2

  y = 1

Substituting into the first equation gives ...

  x +3(1) = 5

  x = 2 . . . . . . . subtract 3

The solution is (x, y) = (2, 1).

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