Seudónimo Seudónimo
  • 23-12-2018
  • Mathematics
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100 points! What is the solution to the system of equations? x+y=2 x-y=4 ( , )

Respuesta :

altavistard
altavistard altavistard
  • 23-12-2018

Answer:

(3, -1)

Step-by-step explanation:

The system of linear equations x+y=2 x-y=4 can be rewritten as

x+y=2

x-y=4

We can eliminate y by adding these two equations together:

x+y=2

x-y=4

----------

2x = 6

Solving for x, x = 3.  

Now find y by subbing 3 for x in the first equation:

3 + y = 2.  Then y = -1.

The solution is (3, -1).

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