document.write( "Question 248818: twice one number added to another number is 18. four times the first number minus the other number is 12.find the number. \n" ); document.write( "
Algebra.Com's Answer #181320 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Let x = \"a number\"
\n" ); document.write( "Let y = \"another number\"
\n" ); document.write( ":
\n" ); document.write( "Write an equation for what it says
\n" ); document.write( ":
\n" ); document.write( "\"twice one number added to another number is 18.\"
\n" ); document.write( "2x + y = 18
\n" ); document.write( ":
\n" ); document.write( "\" four times the first number minus the other number is 12\"
\n" ); document.write( "4x - y = 12
\n" ); document.write( ":
\n" ); document.write( "find the number.
\n" ); document.write( ":
\n" ); document.write( "Use elimination, add the two equations
\n" ); document.write( "2x + y = 18
\n" ); document.write( "4x - y = 12
\n" ); document.write( "------------Addition eliminates y, find x
\n" ); document.write( "6x = 0 = 30
\n" ); document.write( "x = \"30%2F6\"
\n" ); document.write( "x = 5
\n" ); document.write( ":
\n" ); document.write( "I'll let you find y now \n" ); document.write( "
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