Here are two equations. You can select a number to multiply each equation using the croll bars. The computer will multiply for you. It will also add the two equations when you press the button labeled "Add"
When you think you know the values of x and y, enter those values and press "Check" to see if you are right. If you are correct you can proceed to another problem.
Download an executable version of Simultaneous equations.
Students can practice the decisions needed to solve equations by the elimination method. Some students practice as many as 50 in twenty minutes. They receive instant feedback. Teachers can identify those who need special attention.