Odpowiedzi

2010-03-24T21:10:19+01:00
A)1/3x-2=x+2
1/3x - x = 2+2
-2/3x = 4 / :(-2/3)
x = -6
b)1-6/7x=4/7 /*7
7 - 6x = 4
6x = 4-7
6x = -3 / :6
x = -0,5
c)6(1/4x-2)=18
1,5x - 12 = 18
1,5x = 18 +12
1,5x = 30 /:1,5
x = 20
d)x/6-1/6=1 / *6
x - 1 = 1
x = 1+1
x = 2
2010-03-24T21:15:57+01:00