3.1/5+4/9= pake caranya

(1×9)/45 + (4×5)/45 = 29/45

3.1/5=3×5=15+1=16,16/5
16/5+4/9=.../45+.../45=
16×9=144,4×5=20
144/45+20/45=164/45
Jika disederhanakan hasilnya 3.29/45