How much smaller is 15a – 18b + 19c than the sum of 2a – 3b – c and 3b – c + 4a.
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Answer:
-9a-18b+17c
Step-by-step explanation:
(2a – 3b – c) + (3b – c + 4a) - (15a – 18b + 19c)
6a - 2c - 15a - 18b + 19c
-9a-18b+17c
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