Odpowiedzi

2010-03-10T20:36:28+01:00
6(¼x-2)=18 /:6
¼x-2=3
¼x=5 /*4
x=20
2010-03-10T20:37:01+01:00

6(1/4x-2)=18
6/4x-12=18
3/2x=18+12
3/2x=30
x=20
Spr.
6(1/4*20-2)=6(5-2)=6*3=18
pozdrawiam:)
2010-03-10T20:38:09+01:00
6(¹₄x-2)=18
⁶₄x-12=18
1²₄x-12=18
1½x-12=18
1,5x-12=18
1,5x=18+12
1,5x=30 |:1,5
x=20