\(\frac{19}{11}+\left(\frac{8}{13}+\frac{3}{11}\right)=\frac{19}{11}+\frac{3}{11}+\frac{8}{13}=\frac{22}{11}+\frac{8}{13}=2+\frac{8}{13}=2\frac{8}{13}\)
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