Question

Scrieti inversele nr ratioanale : 2 supra 1 ; 1 supra 2 ; 3 supra 7 ; 11 supra 23 ; 1 intregi si 1 supra 5 ; 1 supra 3 + 2 supra 5 ; 1+ 1 supra 4 .

Answer 1

2 / 1 ==1/2
1/ 2 == 2 / 1
3 / 7 == 7 / 3
11/ 23 == 23 / 11
1 si 1/5 = 6 / 5==5 / 6
1 / 3 + 2 / 5 = 5 / 15 + 6 / 15 = 11/ 15 ==15/11
1 + 1/ 4 = 4 / 4 + 1 / 4 = 5 / 4 == 4 /5