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)![]() ![]() You can put this solution on YOUR website! --- \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: \n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php \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( " |