document.write( "Question 926788: a boy is 10 years older than his brother. in four years, he will be twice as old as his brother. find the present age of each \n" ); document.write( "

Algebra.Com's Answer #562542 by TimothyLamb(4379) $\"\"$ $\"About$

You can put this solution on YOUR website!
x = boy age
\n" ); document.write( "y = brother age
\n" ); document.write( "---
\n" ); document.write( "x = y + 10
\n" ); document.write( "x + 4 = 2(y + 4)
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "x - y = 10
\n" ); document.write( "x + 4 = 2y + 8
\n" ); document.write( "---
\n" ); document.write( "x - y = 10
\n" ); document.write( "x - 2y = 4
\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 = boy age = 16
\n" ); document.write( "y = brother age = 6
\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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