Question

2 supra 5 ×2 supra 7 =
3 supra 7 × 3 supra 12 =
4 supra 6 × 4 supra 7 =
5 supra 20 :6 supra 15 =
6 supra 31 :6 supra 11 =

Answer 1

2/5x2/7=4/35
3/7x3/12=9/84=3/28
4/6x4/7=16/42=8/21
5/20÷6/15=5/20x15/6=75/120=15/6
6/31÷6/11=6/31x11/6=66/1bc=11/31