document.write( "Question 925878: John is twice Joan's age. 5 years ago he was 7 times her age. How old will each be next year? \n" ); document.write( "

Algebra.Com's Answer #561852 by TimothyLamb(4379) $\"\"$ $\"About$

You can put this solution on YOUR website!
x = john age now
\n" ); document.write( "y = joan age now
\n" ); document.write( "---
\n" ); document.write( "x = 2y
\n" ); document.write( "x - 5 = 7(y - 5)
\n" ); document.write( "---
\n" ); document.write( "x = 2y
\n" ); document.write( "x - 5 = 7y - 35
\n" ); document.write( "---
\n" ); document.write( "x - 2y = 0
\n" ); document.write( "x - 7y = -30
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "x - 2y = 0
\n" ); document.write( "x - 7y = -30
\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 = 12
\n" ); document.write( "y = 6
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "x = john age next year = 13
\n" ); document.write( "y = joan age next year 7
\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( "

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