Question

сросно помогите пж !!!!!!!!!!!!!!!

Answer 1

4 2/5 : (7/10+ 2 3/5)=
(4•5+2)/5: (7/10+ ((2•5+3)•2)/(5•2))=
12/5: (7/10+ 26/10)=
12/5: 33/10= 12/5• 10/33=
Сокращаем 12 и 33 на 3: 5 и 10 на 5
4/1• 2/11= 8/11


5• (2/3)^3 :(4/9)^2=
5• 2^3/3^3• (3•3)^2/(2•2)^2=
5• 2^3/3^3• 3^4/2^4=
Сокращаем 2^3 и 2^3; 3^3 и 3^3;
5• 1/1• 3/2= 15/2= 7 1/2= 7,5