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Lesson: Advance Algebra - 16

Multiplying Equations in Combination

[Page 16 of 23]

Occasionally, if you want to use equation combination to get rid of a variable, you’ll have to multiply each equation by a different number.

For example, in the following question, a good strategy for getting rid of y is to multiply the first equation by –5 and the second equation by what number?

In the space provided, type the number you would multiply the second equation by to make y cancel out, then click Continue.

Answer: 

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