document.write( "Question 1087316: The sum of two numbers is -9. One of the numbers minus twice the other number is 30. Find the two numbers \n" ); document.write( "

Algebra.Com's Answer #701569 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "let two numbers be $\"x\"$ and $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( "if the sum of two numbers is $\"-9\"$ we have:\r
\n" ); document.write( "\n" ); document.write( " $\"x%2By=-9\"$ ....solve for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=-9-y\"$ .....eq.1\r
\n" ); document.write( "\n" ); document.write( "if one of the numbers $\"minus\"$ $\"twice\"$ the other number is $\"30\"$ we have:\r
\n" ); document.write( "\n" ); document.write( " $\"x-2y=30\"$ ....solve for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=30%2B2y\"$ ..........eq.2\r
\n" ); document.write( "\n" ); document.write( "from eq.1 and eq.2 we have:\r
\n" ); document.write( "\n" ); document.write( " $\"-9-y=30%2B2y\"$ ....solve for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"-9-30=y%2B2y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"-39=3y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"-39%2F3=y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=-13\"$ \r
\n" ); document.write( "\n" ); document.write( "find $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=30%2B2y\"$ ..........eq.2\r
\n" ); document.write( "\n" ); document.write( " $\"x=30%2B2%28-13%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=30-26\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=4\"$ \r
\n" ); document.write( "\n" ); document.write( "so, your numbers are: $\"-13\"$ and $\"4\"$ \r
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