Q39 Subtract (7a-2b+3c) from the
sum of (4a+3b+9c) and (-a -7b-3c).
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Answer:
firstly sum of (4a +3b +9c ) and (-a - 7b -3c )
4a +3b +9c
-a - 7b -3c
3a - 4b + 6c
3a - 4b + 6c
- 7a + 2b - 3c
-4a - 2b + 3c. ans
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