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प्रश्न
Find the sum of: 3a + 5b + 2c, 2a + 3b-c and a + b + c.
योग
उत्तर
3a + 5b + 2c, 2a + 3b-c and a + b + c.
3a + 5b + 2c + 2a + 3b - c + a + b + c.
= 6a + 9b + 3c - c
= 6a + 9b + 2c
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