Tolong bantu jawab

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• Notasi Sigma

$sumlimits^{3}_{k=1} : frac{1}{k + 2} = frac{1}{1 + 2} + frac{1}{2 + 2} + frac{1}{3 + 2} \ sumlimits^{3}_{k=1} : frac{1}{k + 2} = frac{1}{3} + frac{1}{4} + frac{1}{5} \ sumlimits^{3}_{k=1} : frac{1}{k + 2} = frac{20 + 15 + 12}{60} \ sumlimits^{3}_{k=1} : frac{1}{k + 2} = frac{47}{60}$

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