Combine like terms.
x + 
y - 
x - 
y + 19
A. 2x + 
y + 19
B. 2x + 
y + 19
C. 
x + 
y + 19
D. 2x + 
y + 19
Answer: D
Mathematics
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A. 
B. 0
C. ? + 6
D. 
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A. 6 B. 10 C. -10 D. -6
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A. N 40° W B. N 50° W C. N 40° E D. S 140° W
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Add and simplify. Write the answer as a mixed number as needed. 
- 
A. 
B. 
C. 
D. 
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