document.write( "Question 820252: The UPS delivery man is delivering Christmas presents. The combined weight of the packages is 90 lb. He has 2 fewer 15 lb packages than 5 lb and twice as many 10 lb packages as 5 lb packages. How many of each weight package does he have? \n" ); document.write( "
Algebra.Com's Answer #493453 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
5x + 10y + 15z = 90
\n" ); document.write( "z = x - 2
\n" ); document.write( "y = 2x
\n" ); document.write( "---
\n" ); document.write( "put into standard form:
\n" ); document.write( "---
\n" ); document.write( "5x + 10y + 15z = 90
\n" ); document.write( "x - z = 2
\n" ); document.write( "2x - y = 0
\n" ); document.write( "---
\n" ); document.write( "plug the above standard form 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= 3
\n" ); document.write( "y= 6
\n" ); document.write( "z= 1
\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( "
\n" );