



 
Hi Benjamin, I want to illustrate with a different question.
I would first multiply both sides of the first equation by $x2$ to get \[y + 6 = \frac12 x  1.\] Solving for $y$ gives \[y = \frac12 x  7.\] Substitute this value for $y$ into the second equation to get \[\frac{x  4}{\frac12 x  7 + 7}=4.\] Solve for $x.$ Cautionary note:
Penny  


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