Question

calculează 1 supra 3 + 2 supra 3 = 3 supra 4 + 4 supra 4 = 2 supra 5 + 4 supra 5 = 3 supra 6 - 2 supra 6 = 5 supra 7 - 2 supra 7 = 2 supra 9 + 3 supra 9 + 1 supra 9 = 2 supra 8 + 3 supra 8 - 4 supra 8 = 8 supra 9 - 1 supra 9 - 5 surpa 9 =​

Answer 1

1/3+2/3=(1+2)/3=3/3=1

3/4+4/4=(3+4)/4=7/4

2/5+4/5=(2+4)/5=6/5

3/6+2/6=(3+2)/6=5/6

.....

8/9-1/9-5/9=(8-1-5)/9=2/9