Odpowiedzi

2010-03-29T16:17:25+02:00
2x- 6= 3(x+1)
2x-6= 3x+3
2x-3x= 3+6
-1x=9/ -1
x=-9

1/2(y-1)=5y
1/2y-1/2=5y
1/2-5y=1/2
-4,5y= 1/2/-4,5
y=0,111..

ale nie jestem pewien!!;];]
2010-03-29T16:21:17+02:00
A) 2x-6=3(x+1)
2x-6=3x+3
2x-3x=3+6
-x=9/:(-1)
x= -9

b) 1/3( y-1) = 5y
1/3y - 1/3 = 5y
1/3y - 5y = 1/3
- 14/3y = 1/3 /*(-3/14)
y= 1/14