z tego wzoru wyznacz- h W= 17/ 20(h- 100)

w*20(h-100)=17 20hw-2000w=17 20hw=17+2000w/:20w h=(17+2000w)/20w

W= 17/ 20(h- 100) /*[20(h-100)] W[20(h-100)]=17 20Wh-2000W=17 20Wh=17+2000W /:20W h=17/(20W) + 100 h=0,85 /W + 100