![]() Add or subtract the two equations to eliminate one letter.Multiply one or both equations by some number(s) to make the number in front of one of the letters (unknowns) the same or exactly the opposite in each equation.To use the addition/subtraction method, do the following: This method is also known as the elimination method. There are three common methods for solving: addition/subtraction, substitution, and graphing. If you have two different equations with the same two unknowns in each, you can solve for both unknowns. Solving Systems of Equations (Simultaneous Equations) Quiz: Linear Inequalities and Half-Planes.Solving Equations Containing Absolute Value.Inequalities Graphing and Absolute Value.Quiz: Operations with Algebraic Fractions. ![]()
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