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The Solving systems of linear equations with elimination 2 exercise appears under the 8th grade (U.S.) Math MissionAlgebra I Math Mission, Mathematics II Math Mission, Algebra II Math Mission and Mathematics III Math Mission. This exercise has practice with solving systems of equations that need to be manipulated to be ready for elimination.

Types of Problems

There is one type of problem in this exercise:

  1. Solve system with elimination: This problem presents two equations with one variable already lined up for elimination. The user is expected to use elimination and solve the system. The answer is provided as an x and a y-coordinate.
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    Solve system with elimination

Strategies

Knowledge of the elimination method of solving equations will help to perform this exercise accurately and efficiently.

  1. To solve by elimination, add (or subtract) the equations from each other to find the solutions.
  2. These problems generally need an additional step before they are ready for elimination. Usually it is a simple multiplication or division step.

Real-life applications

  1. Applications include supply and demand lines form business and various other situations where there is information gained from different resources.
  2. Equations show up in nearly every science or business class one is ever in.
  3. Computers are also equation solvers. Computers were originally invented to solve equations over and over again instead of humans doing the calculations.

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