Odpowiedź:
-6 - 8 = x - 3x
- 14 = - 2x/ : - 2
7 = x
------
6x - 15 = 15 + 5x + 4x
0= 5x + 4x - 6x
0= 3x
0 = x
5 + x = 24 - x - 19 + 2x
5 - 24 + 19 = -x -x - 2x
0 = -4x
-------
Nie jestem pewna
3x-6=x+8
3x-x=8+6
2x=14
x=7
3(2x-5)=5(3+x)+4x
6x-15=15+5x+4x
6x-5x-4x=15+15
-3x=30
x= -10
5+x=(24-x)-(19-2x)
5+x=-456+48x+19x-x
5+456=+48x+19x-x+x
461=65x
7.1 ~ x
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Odpowiedź:
-6 - 8 = x - 3x
- 14 = - 2x/ : - 2
7 = x
------
6x - 15 = 15 + 5x + 4x
0= 5x + 4x - 6x
0= 3x
0 = x
------
5 + x = 24 - x - 19 + 2x
5 - 24 + 19 = -x -x - 2x
0 = -4x
0 = x
-------
Nie jestem pewna
Odpowiedź:
3x-6=x+8
3x-x=8+6
2x=14
x=7
3(2x-5)=5(3+x)+4x
6x-15=15+5x+4x
6x-5x-4x=15+15
-3x=30
x= -10
5+x=(24-x)-(19-2x)
5+x=-456+48x+19x-x
5+456=+48x+19x-x+x
461=65x
7.1 ~ x