`3(7)/(11)+7(3)/(11)xx1(1)/(2)=?`

7/11+(-3)/11

(7)/(11)-"[1 (1)/(2)-[(1)/(2)+(1(3)/(4)-(1)/(2)+(1)/(3))]]

7(1)/(2)-((8)/(11)xx7(1)/(3))-:(3(1)/(2)-2(1)/(4))

5(17)/(37)xx4(51)/(52)xx11(1)/(7)+2(3)/(4)=?

Verify the following: (i) ((3)/(4)+(-2)/(5))+(-7)/(10)=(3)/(4)+((-2)/(5)+(-7)/(10)) (ii) ((-7)/(11)+(2)/(-5))+(-13)/(22)=(-7)/(11)+((2)/(-5)+(-13)/(22)) (iii) -1+((-2)/(3)+(-3)/(4))=(-1+(-2)/(3))+(-3)/(4)

Name the property used in the following. (-7)/(11)xx(-3)/(5)=(-3)/5xx(-7)/(11)

The sum of (7)/(2xx3)((1)/(3))+(9)/(3xx4)((1)/(3))^(2)+(11)/(4xx5)((1)/(3))^(3)+ upto 10 terms is equal to