Can you tell me that the question which you have solved is in substituion or elimination method???
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Step-by-step explanation:
Substitution is best used when one (or both) of the equations is already solved for one of the variables. It also works well if one of the variables has a coefficient of 1. Elimination: Elimination is the method that I use almost every time. If you are not sure which method to use, I recommend that you use elimination.
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