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spayn [35]
3 years ago
9

9x - 7y = -28 7y -9x = 28

Mathematics
1 answer:
Fantom [35]3 years ago
5 0

Answer:

Substitution or Elimination

Step-by-step explanation:

Substitution: x= -28/9 +7y/9

Elimination: x=x,y=4+9x/7

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