(7 1\2 × 2 2\3- 12 1\4 : 7\9 ) : 6+3 1\8+ 5 2\7=...

Question

(7 1\2 × 2 2\3- 12 1\4 : 7\9 ) : 6+3 1\8+ 5 2\7=...

Answer 1

7 1/2×2 2/3=15/2×8/3=20
12 1/4÷7/9=49/4÷7/9=49/4×9/7=63/4=15 3/4
20-15 3/4=19 4/4-15 3/4=4 1/4
4 1/4÷6=17/4×1/6=17/24
17/24+3 1/8=17/24+25/8=17/24+75/24=92/24=
=3 20/24=3 5/6
3 5/6+5 2/7=23/6+37/7=161/42+222/42=
=383/42=9 5/42