Write the sentence as an equation. Use x to represent "a number."Twice the sum of a number and -18 is -20.
A. 2x + (-18) = -20
B. 2 + x + (-18) = -20
C. 2[x + (-18)] = -20
D. x + 2(-18) = -20
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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