1. 2x-2=4
2x=4+2
2x=6
x=3
2. 5y+2=7
5y=7-2
5y=5
y=1
3. 14x+2=9
14x=9-2
14x=7
x=2
4. 12y-6=18
12y=18+6
12y=24
y=2
5. 10x-5=5
10x=5+5
10x=10
x=1
6. 18y-28=8
18y=8+28
18y=36
y=2
7. 3x+2=8
3x=8-2
3x=6
x=2
8. 3x-1=29
3x=29+1
3x=30
x=10
9. -2x+1=-5
-2x=-5-1
-2x=-6
x=3
10. 4x-7=1
4x=1+7
4x=8
x=2
Curiosul999 întreabă: