Hasil dari 2−1+3−12^{-1}+3^{-1}2−1+3−1 adalah...
(Soal Ujian Nasional 2018)
56\frac{5}{6}65
23\frac{2}{3}32
12\frac{1}{2}21
13\frac{1}{3}31
Alternatif penyelesaian :
2−1+3−1=12+132^{-1}+3^{-1}=\frac{1}{2}+\frac{1}{3}2−1+3−1=21+31
=36+26=\frac{3}{6}+\frac{2}{6}=63+62
=56=\frac{5}{6}=65