Question:
Tick (✓) the correct answer:
The sum of (6a + 4b − c + 3), (2b − 3c + 4), (11b − 7a + 2c − 1) and (2c − 5a − 6) is
(a) (4a − 6b + 2)
(b) (−3a + 14b − 3c + 2)
(c) (−6a + 17b)
(d) (−6a + 6b + c −4)
Solution:
(c) (−6a + 17b)
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