Simultaneous Equations by Elimination

1.Adapt the two equations, multiplying by the appropriate numbers in order to eliminate one of the unknown values.

2.Add them, and eliminate one of the unknowns.

3.Solve the resulting equation.

4.Substitute the value obtained in one of the initial equations and then solve.

5.The two values obtained are the solution to the system.

The easiest method is to remove the y, this way the equations do not have to be prepared. However, by choosing to supress the x, the process can be seen much better.

Add and solve the equation:

Replace the value of y in the second equation.

Solution:

Examples