erikaharcus02 erikaharcus02

14-12-2020
Mathematics

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Solve by combining:

-x-y=6
5x-7y=66

Respuesta :

Аноним Аноним

14-12-2020

Answer:

x = 2

y = 8

Step-by-step explanation:

-x - y = 6

5x - 7y = 66

-x - y = 6

x = -y - 6

5x - 7y = 66

5 ( -y - 6 ) - 7y = 66

-12y - 30 = 66

-12y = 96

y = -8

x = -y - 6

x = 8 - 6

x = 2

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