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Mathematics 12 Online
OpenStudy (anonymous):

What is the solution to this system of linear equations? 12q + 3r = 15 –4q – 4r = –44

OpenStudy (anonymous):

Multiplying the second equation by 3 gives \[ -12q - 12r = -132. \]Can you subtract this from the first equation to finish?

OpenStudy (anonymous):

Um . I don't understand

OpenStudy (anonymous):

Did you understand how I multiplied by 3?

OpenStudy (anonymous):

Oh you multiplied the -4q and -4r by 3. ok I got ya

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