Răspuns:
Explicație pas cu pas:
a) = (1+2+4)/7 = 7/7 = 1
b) = (1+3+5)/63 = 9/63 = 1/7
c) = (17+49+86)/152 = (66+86)/152 = 152/152 = 1
d) = (29-13-5)/77 = (16-5)/77 = 11/77 = 1/7
e) = (11-1-3-5)/4 = (7-5)/4 = 2/4 = 1/2
f) = (137-35-49-51)/371 = (102-49-51)/371 = =(102-100)/371 = 2/371.
