Find the value of `x`and `y` when
`3x+y=3`
`9x-3y=9`

Find the value of x , y 2x+3y=6 3x-2y=4 .

3x-y=3 , find the value of x and y 9x-3y=9

Find the values o x and y if: (3x-1,2y-7)=(9,-9)

Find for values of x and y 3x+2y=5 2x-3y=7

Find the values o x and y if: (5x-3y,y-3x)=(4,-4)

Find the value of x^3-8y^3-36 x y-216 , when x=2y+6.

Find the value of x^3-8y^3-36 x y-216 , when x=2y+6.

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 values of x and y in the following rectangle : We know that the opposite sides of a rectangle are equal therefore 3x + y = 7 …(1) x + 3y = 13 …(2) 9x + 3y = 21 [from (1)] {:(" x + 3y = 13"),( " "ul"- - -"),("On subtracting, 8x =8"):} x = 1 Now, from (1), 3 (1) + y = 7 implies y = 7 - 3 implies y = 4 Hence, the required values of x and y are 1 and 4 respectively.

For f(x ,y)= 7x +9y , what is the value of f(x,y) when y =((5)/(x))^(2) and x=3 ?