Without access to the specific question with ID 3666527, I can provide some general advice on the most efficient first step to solve a system of linear equations with two variables.
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Identify the Equations: Start by clearly writing down the two linear equations you need to solve.
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Choose a Method: Determine a method based on the form of the equations:
- Substitution: If one equation is easily solvable for one variable.
- Elimination: If the coefficients of one of the variables in both equations are easily manipulatable (e.g., both are integers or can be made to match by multiplication).
- Graphing: If you need a visual understanding or if integer solutions are required.
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Isolate Variables (if using substitution): If you choose substitution, isolate one variable in one equation.
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Combine Equations (if using elimination): If you choose elimination, prepare to add or subtract equations to eliminate one variable.
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Solve for Variables: Apply the chosen method to find the values of the variables.
If you provide the specific equations, I can give more tailored advice on the most efficient approach to solving them.