Odpowiedzi

2010-03-24T13:52:29+01:00
5x-7=8x+4=
-3x= -11 | : -3
x= 3i 2/3


3x+4=5x-6=
-2x= 10 | : -2
x=5

4+5x=x+12=
4x=8 | :4
x= 2

x+1=3x-4=
5= 4x | :4
x= 1 i 1/5

6x+5=4+5=
6x= 4 | :6
x= 1 i 2/6
2010-03-24T13:53:16+01:00
5x-7=8x+4
5x - 8x = 4 + 7
-3x = 11
x = -3⅔

3x+4=5x-6
3x - 5x = -6 - 4
-2x = -10
x = 5

4+5x=x+12
5x - x = 12 - 4
4x = 8
x=2

x+1=3x-4
x - 3x = -4 -1
-2x = -5
x = 2,5

6x+5=4+5
6x = 9 - 5
6x = 4
x = ⅔

1-7x=9-5x
-7x + 5x = 9 - 1
-2x = 8
x = -4

3x-2=2x+4
3x - 2x = 4 + 2
x = 6

2x+4=1+2x
4 = 1
sprzeczne
1 5 1