Răspuns: ↓
Explicație pas cu pas:
1. Care dintre ele sunt proporții?
a. 12/13 = 6/26 <=>
<=> 12 • 26 = 13 • 6 <=>
<=> 312 = 78 <=>
<=> 312 ≠ 78 [ F ]
b. 6/12 = 13/26 <=>
<=> 6 • 26 = 12 • 13 <=>
<=> 156 = 156 <=>
<=> 156 = 156 [ A ]
c. 6/13 = 12/26 <=>
<=> 6 • 26 = 13 • 12 <=>
<=> 156 = 156 <=>
<=> 156 = 156 [ A ]
d. 12/6 = 26/13 <=>
<=> 12 • 13 = 6 • 26 <=>
<=> 156 = 156 <=>
<=> 156 = 156 [ A ]
e. 26/6 = 12/13 <=>
<=> 26 • 13 = 6 • 12 <=>
<=> 338 = 72 <=>
<=> 338 ≠ 72 [ F ]
Succes! :)
--McRobert--