X-5=2x+10
x-2x=15
-x=15/x (-1)
x=-15
35=7x-28
7x=63
x=9
3x+6=18
3x=12
x=4
Succes!
Nu e bine la primul...
(x-5)=2(x+10)
x-5=2x+20
-x=25
x=-25
2. 35=7x-28
7x=63
x=9
3. 3(x+2)=18
3x+6=18
3x=12
x=4
prima era gresita