Odpowiedź :
Odpowiedź:
3x=-15
x=-5
x+2=5
x=5-2
x=3
2x-1=1
2x=1+1
2x=2
x=1
3-2x=6
-2x=6-3
-2x=3
x=-1½
2x-1-x=3
2x-x=3+1
x=4
Liczę na naj ;)
3x = - 15 /:3
x = -5
x + 2 = 5
x = 5 - 2
x = 3
2x - 1 = 1
2x = 1 + 1
2x = 2 /:2
x = 1
3-2x = 6
-2x = 6 - 3
-2x = 3 /:(-2)
[tex]x = -\frac{3}{2}[/tex]
[tex]x = -1\frac{1}{2}[/tex]
2x - 1 - x = 3
x - 1 = 3
x = 3 + 1
x = 4