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Mathematics 21 Online
OpenStudy (anonymous):

What is the solution of the system? y = x + 5 y = –5x – 1

OpenStudy (pfenn1):

substitute for y and get the equation\[x+5 = -5x-1\]

OpenStudy (pfenn1):

Solve for x

OpenStudy (anonymous):

or multiply the top equation by 5 and add it to the second.

OpenStudy (anonymous):

(-1,4)

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