Respuesta :
The method that is used to solve systems of equations is D. All of the above.
- Based on the information, it should be noted that the substitution method, graphing, and the Gaussian elimination can all be used to solve a system of equations.
- The graphing method is the use of graphs. Substitution and Gaussian elimination methods are typically used to find the variables in a simultaneous equation.
Therefore, the correct option is all of the above.
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