Write an equivalent expression using a commutative or associative law, as indicated.(3x + 3y) + 4z; associative
A. (3x + 3y + 4z)
B. 3x + 3y + 4z
C. (3y + 3x) + 4z
D. 3x + (3y + 4z)
Answer: D
Mathematics
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Fill in the blank with one of the words or phrases listed below.
The solution(s) to the equation 2x + 5 = x + 5 is/are 
.
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A. 
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C. 
D. 
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