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2x-y=3 and y=9-x in substitution methood​
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2x-y=3 and y=9-x in substitution methood​

User Steve Lianoglou
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1 Answer

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Answer:

By adding equation we get:

2x-y=3

x +y=9

______

3x=12

x=6

Explanation:

cut the positive and negative (y)

User Nsantorello
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