" If "3^((x-1))=9" and "4^((y+2))=64" what is the value of "(x)/(y)

If (4x )/(2y)=4, what is the value of (3y)/(x) ?

If (1)/(x) + (1)/(y) = 2 and (3)/(x) + (4)/(y) = 7 , what is the value of (x + y) ?

If 3/(x+y)+2/(x-y)=2 and 9/(x+y)-4/(x-y)=1 , then what is the value of x/y ?

If (1)/(x+y) + (1)/(x-y) = 4 and (2)/(x+y) + (3)/(x-y) = 9 what is the value of x ?

If (x - ( 1)/( 3))^(2) + ( y - 4)^(2) = 0 , then what is the value of ( y +x)/( y -x) ?

If ((5x-y))/((5x + y)) =3/7, what is the value of ((4x ^(2) + y ^(2) -4 xy ))/( ( 9x ^(2) + 16 y^(2) + 24 xy)) ?

If 2x-3y=5 , what is the value of 4x^(2)-12xy+9y^(2) ?