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3 years ago

14

X + y=-4 X +2y=13 Using elimination method

1 answer:

laila [671]3 years ago

6 0

$\begin{array}{lrlll}
x+y=-4&\times -1\implies &-x-y=4\\
x+2y=13&\implies &\ x+2y=13\\
&&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\
&&\boxed{?}+\boxed{?}=\boxed{?}
\end{array}$

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step 1

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step 3

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substitute

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step 5

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substitute

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