If `3x+4y=12` and `4x+3y=9` , then find the value of x+y

If 3x - 2y = 12 and 6x + y = 9 , then find the values of x and y

(i) x+2y=-7 and 3x-2y=-1, then find the value of x. (ii) If x+y=8 and 4y-x=2, then find the value of y. (iii) If 3x+5y=9 and 5x+3y=7, then find the value of x+y. (iv) If 3x-y=11 and x-3y=17, then find the value of x-y.

If 3x + 4y= 16 and xy= 4 , find the value of 9x^(2) + 16y^(2)

If 4x-5y=37 and 3x-4y=25, then find the value of x-y.

If 3x+2y=12 and x y=6 , find the value of 9x^2+4y^2

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

If 3x+2y=12 and x y=6, find the value of 9x^2+4y^2

If 3x+2y=12 and xy=6, find the value of 9x^(2)+4y^(2)

If 3x+2y=12 and xy=6, find the value of 9x^(2)+4y^(2)

If 3x+2y=12 and xy=6, find the value of 9x^(2)+4y^(2)