Răspunsuri

2014-10-12T11:12:58+03:00
X-1+x=50-1; 2x=49-1; 2x=48; x=48:2; x=24 sper ca e bine
1 5 1
2014-10-12T11:23:44+03:00
1+x-1+x=50 |-1
x-1+x=49 |+1
x+x=50 |:2
x=25