Odpowiedzi

2010-03-24T18:00:22+01:00
2010-03-24T18:08:57+01:00
1.
4=2(x-1)
4=2x-2
-2x=-4-2
-2x=-6/ -2
x=3
2.
1/2x=1/3x-1
1/2x-1/3x=-1
3/6x-2/6x=-1
1/6x=-1/*6
x=-6
3.
(0,6+x:2)=x+1
0,6+x/2=x+1
x/2-x=1-0.6 /*2
x-2x=2-1,2
-x=0,8
x=-0,8
4.
2x-(3x+5:4)=-1/4x-1
2x-(3x+5/4)=-1/4x -1
2x-3x+1/4x=-1-5/4
-3/4x=-9/4 / * -4/3
x=36/12
x=3
2010-03-24T18:09:02+01:00
4+2x-2
2x=4-2/:2
x=2:2
x=1

1/2x=1/3x-1
1/3x-1/2x=1
2/6x-3/6x=1
-1/6x=1/:(-1/6)
x=-6

0.6+1/2x=x+1
0.6-1=x-0.5x
-0.4=0.5x/:0.5
x=-0.8