The value of $\frac{2}{7}-\frac{3}{8}-\left[2\frac{1}{4}\div3\frac{1}{2} of 1\frac{1}{3} + \left\{1\frac{17}{40}-\left(3-1\frac{1}{5}-\frac{3}{8}\right)\right\}\right]$ is:
Answer & explanation
Correct answer: option 2
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