alleryx + y = 7 మరియు x - y = 3 లను కూడటం వలన ఏ చరరాశి తొలగిపోతుంది?
Aరెండూ
Bఏదీ కాదు
Cy
Dx
Answer & Solution
Correct answer: C. y
సమీకరణాలను కూడినప్పుడు +y మరియు -y పదాలు రద్దవుతాయి.
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