Find the value of `(x+y)` and `(x-y)`, if `27x+31y=85` , `31x+27y=89`.

Find the value of : 27x^3-y^3 if 3x-y=8 and xy=3 .

47x+31y=63,31x+47y=15

Find the value of 27 x^3+\ 8y^3, if (i) 3x+2y=14 and x y=8 (ii) 3x+2y=20\ and x y=(14)/9

Find the value of 27x^(3)+8y^(3), if 3x+2y=14 and xy=83x+2y=20 and xy=(14)/(9)

If ( x+ 1,y -2) =(3,1) Find the values of x and y .

Find x and y if : (x+1,y -2) = (3,1)

If 3x -4y =5 and xy=3 , find : 27x^3 - 64y^3 .

Find the values of x and y, if the median for the following data is 31.

If 9x^2+y^2=37 and xy = 2 , x, y> 0 , then the value of (27x^3+y^3) is : यदि 9x^2+y^2=37 और xy = 2 , x, y> 0 , तो (27x^3+y^3) का मान ज्ञात कीजिए ।