dahlyah14 dahlyah14

26-01-2021
Mathematics

contestada

Solve the system of equations by using substitution.
y = –2x – 3
x + y = 9

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Respuesta :

natasha133 natasha133

27-01-2021

Step-by-step explanation:

x-2x-3=9

-x=9+3

-x=12

x=12/-1

x=-12

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