Odpowiedzi

2010-03-16T17:53:19+01:00
A)2(x-1/2)-x+3=3
2x-2i1/2-x+3=3
2x-1-x+3=3
2x-x=3+1-3
x=4-3
x=1
c)3(1-x)-(1-2x)=9
3-3x-1+2x=9
-3x+2x=9-3+1
-x=6+1
-x=7 /*(-1)
x=-7
2010-03-16T17:56:19+01:00
A) 2(x-1/2)-x+3=3
2x-1-x+3=3
x=1


b)0=(x-1)-(3x-5)
(x-1)-(3x-5)=0
x-1-3x+5=0
-2x=-4
x=2

c)3(1-x)-(1-2x)=9
3-3x-1+2x=9
-x=7 /-1
x=-7



d)0=3-(2x-1)
3-(2x-1)=0
3-2x+3=0
-2x=-6
x=3

f) 0,5(2-4x)=3-x
1-2x=3-x
-x=2
x=-2