Odpowiedzi

2010-03-17T17:40:47+01:00
A
1/2x-4=x-6
1/2x-x=6+4
-1/2x=10 /:(-1/2)
x=-20

b
x-5=1/3x+1
x-1/3x=1-5
2/3x= -4 /:2/3
x= -4x3/2
x=-6

c
x/4-1/4=2 /x4
x-1=8
x=8-1
x=7


4 2 4
2010-03-17T17:42:03+01:00
A)

1/2x-4=x-6
1/2x-x=6+4
-1/2x=10 /:(-1/2)
x=-20

b)

x-5=1/3x+1
x-1/3x=1-5
2/3x= -4 /:2/3
x= -4x3/2
x=-6

c)

x/4-1/4=2 /x4
x-1=8
x=8-1
x=7
5 2 5