Multiple Choice
Add or subtract as indicated.
-( 21x + 10xy - 11y) - ( 18x - 23xy - 17y)
A) 3x + 33xy + 6y
B) 42xy
C) 3x - 33xy - 28y
D) 11x - 3xy + 28
Correct Answer:

Verified
Correct Answer:
Verified
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