Răspunsuri

2014-10-12T14:50:05+03:00
24
este raspunsul corect
11+480/x=31
480/x=20
x=24
2014-10-12T14:50:56+03:00
155:(11+480:x)=5
11+480:x=155:5
11+480:x=31
480:x=31-11
480:x=20
x=480:20
x=24