Odpowiedzi

2010-04-14T17:31:00+02:00
A) ½x-4=x-6
½x-x=-2
-½x=-2
x=4
b) x-5=⅓x+1
-⅓x+x=6
2/3x=6
x=9
c)⅚(x-1)=4
⅚x=4+⅚
⅚x=29/6
x=29/5
d) -½(-x-6)=-x
½x+x=-3
3/2x=-3
x=-2
2010-04-14T17:38:19+02:00
A)a)to1/2x-x=-6+4
-1/2x=-2/:(-1/2)
x=-2*-2
x=4



b)tox-1/3x=1+5
2/3x=6/:2/3
x=6*3/2
x=9
c)to 5/6x-5/6=4
5/6x=4+5/6
5/6x=29/6/:5/6
x=29/6*6/5
x=29/5
x=5 4/5
d)to1/2x+3=-x
1/2x+x=-3
1 1/2x=-3
3/2x=-3/:3/2
x=-3*2/3
x=-2