1)
4/7-7/4=(4²-7²)/4*7=(4-7)(4+7)/4*7=-3*11/4*7=-33/28
24/27-27/24=(24²-27²)/24*27=(24-27)(24+27)/24*27=-3*51/24*27=-3*3*17/8*3⁴=-17/2³*3²=-17/72
14/17-17/14=(14²-17²)/14*17=(14-17)(14+17)/14*17=-3*31/14*17=-93/238
1<3<2</p>
(4/7-7/4) < (14/17-17/14) < (24/27-27/24)
Ответ: 3)
2) Тмах=-8°С
Тмин=-20°С
Т=Тмах-Тмин=-2+20=12°С
Ответ: 12° цельсия