Răspuns:
Explicație pas cu pas:
3,(6) = (36 - 3)/9 = 33/9 = 11/3
2,25 = 225/100 = 9/4
9/4 : 11/3 = 9/4*3/11 = 27/44
2 3/4 = 11/4
calculul in paranteza patrata
2 - 11/4*27/44 = 2 - 27/16 = 32/16 - 27/16 = 5/16
__________
1,0(6) = (106 - 10)/90 = 96/90 = 32/30 = 16/15
1 : 16/15 = 1*15/16 = 15/16
___________
a = 5/16 : 15/16 = 5/16*16/15 = 5/15 = 1/3
__________
1/a = 3, numar natural
