3. Subtract (2a - 3b + 4c) from the sum of (a + 3b - 4c), (4a - b + 9c) and (-2b + 3c - a).
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Answered by
2
Answer:
4a+16c
Step-by-step explanation:
=a+3b+4c+4a-b+9c-2b+3c-a
=a+4a-a+3b-b-2b+4c+9c+3c
=5a-a+3b-3b+16c
=4a+16c
Answered by
0
(a+3b-4c+4a-b+9c-2b+3c-a)-(2a-3b+4c)
4a+8c-(2a-3b+4c)
4a+8c-2a +3b-4c
2a+4c+3b
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