" 15.Solve: "(x)/(a)+(y)/(b)=a^(2)+b^(2)" and "(x)/(a^(2))+(y)/(b^(2))=a+b

Solve: (x)/(a)+(y)/(b)=a+b(x)/(a^(2))+(y)/(b^(2))=2

Solve the following pair of equations: (x)/(a)+ (y)/(b)= a +b, (x)/(a^(2)) + (y)/(b^(2))=2, a, b ne 0

Solve: (x)/(a)+(y)/(b)=2,quad ax-by=a^(2)-b^(2)

Solve the following system of equations by method of cross-multiplication: (x)/(a)+(y)/(b)=a+b,quad (x)/(a^(2))+(y)/(b^(2))=2

Solve (x)/(a) + (y)/(b) = 1 and a(x - a)- b(y + b) = 2a^(2) + b^(2) .

Solve : {:((a)/(x)-(b)/(y)=0),((ab^(2))/(x)+(a^(2)b)/(y)=a^(2)+b^(2)):}

" (b) Solve: "x^(2)(dy)/(dx)=y(x+y)

Solve for xandy: (x)/(a)+(y)/(b)=2,ax-by=a^(2)-b^(2)