Odpowiedzi

2010-01-25T18:50:35+01:00
A)½x-4=x-6
1/2x-x=-6+4
-1/2x=-2
x=-2*(-2/1)
x=4
L=1/2*4-4=2-4=-2
P=4-6=-2
L=P
b)x-5=⅓x+1
x-1/3x=1+5
2/3x=6
x=6*3/2
x=9
L=9-5=4
P=1/3*9+1=3+1=4
c) x/4 -¼=2
(x-1)/4=2
x-1=8
x=9
L=9/4-1/4=8/4=2
P=2
2010-01-25T18:54:29+01:00
A) 1/2x - x = -6+4
-1/2x = 2 / *(-2)
x = -4
spr. 1/2*(-4) - 4 =-4-6
-4 = -4
b)x-1/3x = 1+5
2/3x = 6 / * 3/2
x = 9
spr. 9-5 =1/3*9 + 1
4=4
c)x/4 -¼=2 / * 4
x -1 =8
x=9