Question

resolver
x + 4y = 12
5x + 3y = 26


3x + y = 9
2x + 3y = 13

Answer 1

Respuesta:

Explicación paso a paso:

1)

x + 4y = 12  .............................. (por 5)

5x + 3y = 26  ..........................

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5x + 20y = 60

5x + 3y    = 26 ..........................(restamos)

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17y = 34

  y = 2

   x = 4

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2)  

3x + y = 9 ............................(por 3)

2x + 3y = 13 .....................

9x + 3y = 27

2x + 3y = 13 .......................................(restamos)

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7x = 14

x = 2

y = 3