▪д) -1,44 × 5/12 = -144/100 × 5/12 = -36/25 × 5/12 = -3/5 = -0,6;
▪е) 0,28 ÷ (-14/17) = 28/100 × (-17/14) = -17/50;
▪ж) -2,2 ÷ (-1 1/3) = -22/10 ÷ (-4/3) = -11/5 × (-3/4) = 33/20 = 1 целая 13/20 = 1,65;
▪з) 1 1/15 × (-0,5) = 16/15 × (-1/2) = -8/15;
Решение предоставлено ниже
![8*(112-5x)=816\\112-5x=816:8\\112-5x=102 \\ 5x=112-102 \\ 5x=10\\x=10:5\\x=2](https://tex.z-dn.net/?f=8%2A%28112-5x%29%3D816%5C%5C112-5x%3D816%3A8%5C%5C112-5x%3D102+%5C%5C+5x%3D112-102+%5C%5C+5x%3D10%5C%5Cx%3D10%3A5%5C%5Cx%3D2+)
17,4 м = 17,4*10 дм = 174 дм
6,25 м = 6,25*10 дм =62,5 дм
1)
![174*62,5=10875](https://tex.z-dn.net/?f=174%2A62%2C5%3D10875)
2)
![10875:5=2175](https://tex.z-dn.net/?f=10875%3A5%3D2175)
(плиток)
Ответ: 2175 плиток
11. 7. 1 2 11
12. 24. 2. 21= 864