Berapa Hasilnya Notasi Sigma?

Materi Notasi Sigma

[tex] \sum^{5}_{k=1} \frac{1}{k} - \sum^{7}_{k=3} \frac{1}{k-1} \\
= [ \frac11 + \frac12 + \frac13 + \frac14 + \frac15 ] - [ \frac12 + \frac13 + \frac14 + \frac15 + \frac16 ] \\
= 1 - \frac16 \\
= \frac56 [/tex]