[" 40.If "y=a+b" ,"],[" ax "-by=a^(2)-b^(2)]

x+y=a+b,ax-by=a^(2)-b^(2)

{:(x + y = a + b),(ax - by = a^(2) - b^(2)):}

Solve the following simultaneous linear equations in two variables by the method of subsitution : x+y=a+b ax-by=a^(2)-b^(2)

Solve for x and y by cross multiplication method x + y = a + b ax – by = a^(2) – b^(2)

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

Solve the following simultaneous linear equations in two linear variables by the method of cross-multiplication : x/a+y/b=2, ax-by=a^(2)-b^(2)

Solve by the method of substitution: x+y=a+b, ax-by=a^2-b^2

Solve the following pair of linear equations by cross multiplication method : x+y=a+b , ax-by = a^2-b^2 .

Solve the following pair of linear equations by substitution method : x+y=a+b , ax-by= a^2-b^2 .