Question

3)
4)
20 баллов!Спасибо!!!

Answer 1

3) 4/7*(-5 5/6)=4/7*(-35/6)=-10/3
5/62*(-4 3/7)=5/62*(-31/7)=-5/14
-10/3-(-5/14)=-10/3+5/14=-140/42+15/42=-125/42=-2 41/42

4)5 1/6-6 1/4=31/6-25/4=62/12-75/12=-13/12
3 1/4-0.55=3.25-0.55=2.7
-13/12*2.7=-13/12*27/10=-351/120=-2 111/120