11-03-2020
Mathematics

contestada

Solve using substitution.

y = 9
–7x + 6y = –9

Respuesta :

Yang100 Yang100

11-03-2020

Answer:

x=9

Step-by-step explanation:

y=9

-7x+6y=-9

----------------

-7x+6(9)=-9

-7x+54=-9

-7x=-9-54

-7x=-63

7x=63

x=63/7

x=9

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