A) \[1\frac{1}{21}\]
B) \[-1\]
C) \[0\]
D) \[1\]
Correct Answer: A
Solution :
\[\frac{1}{12}+\frac{-1}{3}+\frac{-1}{6}+\frac{-5}{7}+\frac{3}{4}+\frac{10}{7}\] \[=\left( \frac{1}{12}-\frac{1}{3}-\frac{1}{6}+\frac{3}{4} \right)+\left( \frac{10}{7}-\frac{5}{7} \right)\] \[=\left( \frac{1-4-2+9}{12} \right)+\frac{5}{7}=\frac{1}{3}+\frac{5}{7}\] \[=\frac{22}{21}=1\frac{1}{21}\]You need to login to perform this action.
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