If A=2x-3y+4z B=5x-6y+7z C=-x-y+z findA+B+C
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Answer:
(i)
2a + b + 7
4a + 2b + 3
---------------------
6a + 3b + 10
(ii)
3x + y - 8
- 7x + y + 4
---------------------
-4x + 2y - 4
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