document.write( "Question 220879: Ok..I need to know how to set this word problem up into an equation. \"The difference of two numbers is 7, and their sum is 49. Find the two numbers.\" If you could help it would be greatly appreciated! Thanks! =] \n" ); document.write( "
Algebra.Com's Answer #165728 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
two unknowns means two equations\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"The difference of two numbers is 7\" ___ a - b = 7\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"their sum is 49\" ___ a + b = 49\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "adding the equations ___ 2a = 56 ___ a = 28\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "substituting ___ 28 + b = 49 ___ b = 21
\n" ); document.write( "
\n" );