document.write( "Question 929427: Mary has nothing but nickels, dimes, and quarters in her purse. There are twice as many nickels as quarters, and three more dimes than nickels. If she has 58 coins in her purse, then how much money (dollar amount) does she have in the purse? \n" ); document.write( "
Algebra.Com's Answer #564274 by TimothyLamb(4379)\"\" \"About 
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x = nickels
\n" ); document.write( "y = dimes
\n" ); document.write( "z = quarters
\n" ); document.write( "---
\n" ); document.write( "x + y + z = 58
\n" ); document.write( "x = 2z
\n" ); document.write( "y = x + 3
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "x + y + z = 58
\n" ); document.write( "x - 2z = 0
\n" ); document.write( "x - y = -3
\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( "solution:
\n" ); document.write( "x = nickels = 22
\n" ); document.write( "y = dimes = 25
\n" ); document.write( "z = quarters = 11
\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" ); document.write( "
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