1.

Simplify : $$1 + {2 \over {1 + {3 \over {1 + {4 \over 5}}}}}$$

A. $\frac{7}{4}$$
B. $\frac{4}{7}$$
C. $\frac{7}{5}$$
D. $\frac{3}{7}$$
Answer» B. $\frac{4}{7}$$


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