Division of rational numbers 1. Calculation: 1 and 7 / 8 △ (- 10) × (- 3 and 1 / 3) △ (- 3 and 3 / 4) 2. The product of a number and 1 and 3 / 20 is - 4 and 19 / 20?

Division of rational numbers 1. Calculation: 1 and 7 / 8 △ (- 10) × (- 3 and 1 / 3) △ (- 3 and 3 / 4) 2. The product of a number and 1 and 3 / 20 is - 4 and 19 / 20?


calculation:
1 and 7 / 8 △ (- 10) × (- 3 and 1 / 3) △ (- 3 and 3 / 4)
=-(15/8×4/15)×(1/10×10/3)
=-1/2×1/3
=-1/6
2. The product of a number and 1 and 3 / 20 is - 4 and 19 / 20?
-4 and 19 / 20 △ 1 and 3 / 20
=-4.95÷1.15
=-99/23
=-4 and 7 / 23