Simultaneous linear equation in two variables, analytical and graphical solutions. Simultaneous linear in equations. Practical problems on linear equations.
The solution of the system of simultaneous linear equations
4x - 3y = 7 and 7x + 5y = 2 is :
Multiplying first equation by 5 and second by 3 and adding we get x = 1.
Putting x = 1 in 1st, we get 4 x 1 - 3y = 7 or y = -1