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OpenStudy (atlchic):
x=-4y and 3x+2y=20
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OpenStudy (anonymous):
\[3(-4y)+2y=20\] distribute \[-12y+2y=20\] combine like terms\[-10y=20\] divide by -10 \[-10y\]
OpenStudy (atlchic):
use subsitution
OpenStudy (anonymous):
just plug in -4y for x and distribute
OpenStudy (atlchic):
can u show me da example for dat way
OpenStudy (anonymous):
like a drawing?
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OpenStudy (atlchic):
yea
OpenStudy (anonymous):
|dw:1335318517998:dw|
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