Respuesta :

Answer:

x = -1

y = 2

Step-by-step explanation:

6x + 5y = 4

6x - 7y = -20

__________ -

____12y = 24

______y = 24/12

______y = 2

6x + 5y = 4

6x + 5(2) = 4

6x + 10 = 4

6x = 4 - 10

6x = -6

x = -6/6

x = -1

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Anisatunizzati

Answer:

x = -1

y = 2

Step-by-step explanation:

6x + 5y = 4

6x - 7y = -20

____________--

12y = 24

y = 24/12

y = 2

6x + 5y = 4 | ×7 |

6x - 7y = -20 | ×5 |

42x + 35y = 28

30x - 35y = -100

______________+

72x = -72

x = -72/72

x = -1