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When do I use elimination and when do I use substitution?

When do I use elimination and when do I use substitution?
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When do I use elimination and when do I use substitution?

When do I use elimination and when do I use substitution?-example-1
User Shibumi
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Elimination is used when there is a common factor between the two equations. Substitution is used in cases where finding a common term just isn’t possible, or too complicated.
User Joanne C
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