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Add Do Not Use a Number Line Except as a Check

Question 407

Multiple Choice

Add. Do not use a number line except as a check.
- −114+1021-\frac{1}{14}+\frac{10}{21}


A) 1742\frac{17}{42}
B) 1721\frac{17}{21}
C) 23\frac{2}{3}
D) 37\frac{3}{7}

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