3a) Solve using substitution.
y = - 2x
x + 2y = 9...
![subject](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:40 JimmySample7
3a) Solve using substitution.
y = - 2x
x + 2y = 9
![ansver](/tpl/images/cats/User.png)
Answers: 2
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