Discussion
If the expression \( 4c + 4b + 4d \) is subtracted from \( 3c + 4b + 5d \), then the answer will be
Answer: A
Subtracting flips every sign in the expression being taken away.
\[ (3c + 4b + 5d) - (4c + 4b + 4d) \]
\[ = (3c - 4c) + (4b - 4b) + (5d - 4d) \]
\[ = -c + d \]
The \( b \) terms cancel exactly, which is why no \( b \) survives.
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