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OpenStudy (anonymous):
Please help me solve simultaneous equations X-Y=73 X-2Y=4
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OpenStudy (anonymous):
Solve the first equation for X and plug it into the bottom equation. You should now be able to solve for Y. Once you have Y plug it into either of the original equations and you can get X.
OpenStudy (anonymous):
Whenever you see the same amount of algebra equations as unknowns this is a pretty good method.
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