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OpenStudy (anonymous):
5x + 4y = -5 -5x – 7y = -10 can somebody help me with that question ?
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OpenStudy (mertsj):
Add the two equations. Did you do that?
OpenStudy (anonymous):
\[\left( 5x +4y \right)+\left( -5x -7y \right)=-5+\left( -10 \right)\] \[4y -7y =-15\] \[-3y =-15\] \[y =5\] \[x =-5\]
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