Add `(-6)/(11)` and `(-4)/(11)`

Add the rational number: (-8)/(11) and (-4)/(11)

Add the following rational numbers: {:((i) (-2)/(5) and (4)/(5),(ii) (-6)/(11) and (-4)/(11) , (iii) (-11)/(8) and (5)/(8)), ((iv) (-7)/(3) and (1)/(3),(v) (5)/(6) and (-1)/(6),(vi) (-17)/(15) and (-1)/(15)):}

Add(4)/(-11) and (7)/(11)

Add the following rational numbers: (-8)/(11)\ a n d(-4)/(11) (ii) 6/(13)\ a n d\ (-9)/(13)

Add (11)/(8) and (-6)/(8).

Add frac(7)(-11) and frac(3)(7).

Add and express the sum as a mixed fraction: (-12)/(5) and (43)/(10) (ii) (24)/(7) and (-11)/(4)

If P(A) =(6)/(11) ,P(B) =(5)/(11) "and " P(A uu B)=(7)/(11), " then " P(A //B) =?

If a line has direction-cosines lt (-9)/(11), (6)/(11), (-2)/(11)gt , then what are its direction-ratios?

If P(A)=(6)/(11),P(B)=(5)/(11) and P(A uu B)=(7)/(11) , find P(A//B) .