If A=2x-3Y+4z; B=5x-6y+7zC=-x-y+zfindA+B+C
algebra
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Answer:
6x-10y+12z
Step-by-step explanation:
A+B+C=2x+5x-x-3y-6y-y+4z+7z+z
=6x-10y+12z
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