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Question

Which best describes when you should use multiplication to solve a system of linear equations by elimination?

User Matiasf
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Answer:

If you don't have equations where you can eliminate a variable by addition or subtraction you directly you can begin by multiplying one or both of the equations with a constant to obtain an equivalent linear system where you can eliminate one of the variables by addition or subtraction.

Explanation:

User Downhillski
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