Sum of-3a+2b-4c, 9a-5b+2c and -5a+4b+3c is
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Step-by-step explanation:
-3a+2b-4c+9a-5b+2c+-5a+4b+3c
now add the like terms
-3a+9a-5a=1a
2b-5b+4b=1b
-4c+2c+3c=1c
answer is 1a+1b+1c
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