document.write( "Question 822368: At a luncheon for doctors, all but 40 were neurosurgeons, all but 50 were pediatricians, and all but 60 were cardiologists. How many of each group attended the luncheon? \n" ); document.write( "
Algebra.Com's Answer #494790 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "N = total number of doctors:
\n" ); document.write( "x = N - 40
\n" ); document.write( "y = N - 50
\n" ); document.write( "z = N - 60
\n" ); document.write( "---
\n" ); document.write( "y + z = 40
\n" ); document.write( "x + z = 50
\n" ); document.write( "x + y = 60
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "x= neurosurgeons = 35
\n" ); document.write( "y= pediatricians = 25
\n" ); document.write( "z= cardiologists = 15
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
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\n" ); document.write( "---
\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "
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