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strojnjashka [21]
3 years ago
15

Solve 2x+y=-1 and -x+y=-7 in substitution method​

Mathematics
1 answer:
lesantik [10]3 years ago
3 0

Answer:x=2 y=-5

Step-by-step explanation

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Answer:

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Step-by-step explanation:

First you have to get rid of brackets by expanding :

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