Compare the following:- `((-8)/(9)-(11)/(4))-(-4)/(12),(-8)/(9)-((11)/(4)-(-4)/(12))`.

12(1)/(3)-(8)/(9)+(11)/(3)-4(11)/(9)=?

(8)/(4)-(6)/(3)+(9)/(12)-:(15)/(13)

Find the value of (4)/(9)+((-7)/(11)) +((-8)/(27)) .

Fill in the blanks :-4x(7)/(9)=(7)/(9)x (ii) (5)/(11)x(-3)/(8)=(-3)/(8)x(1)/(2)x((3)/(4)+(-5)/(12))=(1)/(2)x+dot x(-5)/(12)(-4)/(5)x((5)/(7)+(-8)/(9))=((-4)/(5)x)+(-4)/(5)x(-8)/(9)

3(5a-7)-2(9a-11)=4(8-13-1)

((6.4)^(2)-(5.4)^(2))/((8.9)^(2)+8.9xx2.2+(1.1)^(2))=

If (7xx8)/(9)=3,(8xx9)/(144)=12,(10xx11)/(169)=13 , then (12xx13)/(441)=?