Find an equivalent expression without parentheses.-(-2.1x + 47.1y + -1z - 
w)
A. -2.1x - 47.1y + -1z + 
w
B. 2.1x - 47.1y + -1z - 
w
C. -2.1x + 47.1y + 1z - 
w
D. 2.1x - 47.1y + 1z + 
w
Answer: D
Mathematics
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