If `173x+197y=149` and `197x+173y=221` ,then find `(x,y)`

If x = 1 , and x + y = -2 , then find y

If x=1 then find x+y=-2 , y=?

x^(y)=y^(x) then find (dy)/(dx)

(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 y^(x)=x^(y), then find (dy)/(dx)

y^(x) = x^(y) then find dy/dx

If x^(y)=y^(x), then find (dy)/(dx)

If x=y-2 and x/y-(x+1)/y=1 , find x and y

If x^(y)=y^(x), then find(dy)/(dx)

If x= -2 and y =3 , then find the value of (y/x)^y .