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OpenStudy (anonymous):
find the system of equations x-8y=21 3x-8y=15
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OpenStudy (anonymous):
\(x\) and \(y\) ??
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
use elimination or subtitution
OpenStudy (anonymous):
x = 21 + 8y 3(21+8y) - 8y = 15 63 - 16y = 15 y = 3
OpenStudy (anonymous):
|dw:1374285953025:dw|
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