Răspunsuri

2014-04-22T15:24:18+03:00
X-13,4=9,06<=>x=13,4+9,06=>x=22,46
2,3x=3,45<=>x=3,45/(-2,3)=>x=-1,5
x-1,5=7,3=>x=8,8
1 5 1