The value of

$$\begin{aligned}& \frac{3}{7}+\frac{2}{7}+\frac{1}{14}+\frac{2}{7}-3 \\\end{aligned}$$​

Correct option is B

Solution:

$$\begin{aligned}& =\frac{3}{7}+\frac{2}{7}+\frac{1}{14}+\frac{2}{7}-3 \\& =\frac{6+4+1+4-42}{14} \\& \Rightarrow \frac{-27}{14}\end{aligned}$$

Hence, the correct answer is (b).