Răspuns:
Explicație pas cu pas:
2,(3) = (23 - 2)/9 = 21/9 = 7/3
0.75 = 75/100 = 3/4
7/3 + 3/4 = 28/12 + 9/12 = 37/12
37/12*6/37 = 1/2
1 - 1/5 = 5/5 - 1/5 = 4/5
2,5 = 25/10 = 5/2
5/2 - 4/5 + 1/2 = 6/2 - 4/5 = 3 - 4/5 = 15/5 - 4/5 = 11/5
176 : 11/5 = 176*5/11 = 80
