To solve two sets of equations at the same time

 

Text Box: 1. Number the equations (1) and (2) 2. Look to see what needs to be done to lose one of the variables:- - Substitute one equation for another - Add both equations - Subtract both equations - Multiply one equation, then add. - Multiply both equations then add. 3. Solve to find one variable (eg x or y) 4. Substitute that value into equation (1). 5. Solve to find other variable. 6. Check by substituting both values into equation (2) 7. Write down solution.