hayhay1234 hayhay1234

03-12-2017
Mathematics

contestada

5x + 2y = 8
x + y = 4

If you want to solve the system of equations by addition, which of the following could you do?

Multiply the second equation by 5 and add.
Multiply the second equation by 2 and add.
Multiply the second equation by -2 and add.

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lesliekolleroxrkcf lesliekolleroxrkcf

03-12-2017

mult the 2nd by 2 then add. this eliminates one of the variables (y) and allows you to solve the other one x

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