− 1⅖ ⋅ 1³⁄₇
2. : ¼−1¾
3. 2½ : (−⅚)
4. −56 ⋅(−4¹⁄₇)
5. (−1)⋅(−3)⋅(1−3)
6. (-6,4-8,6)*(-2)
7. (6,3-10)*0,1