document.write( "Question 649594: the sum of twice a number d and 3 is 12 \n" ); document.write( "

Algebra.Com's Answer #406997 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "twice a number $\"d\"$ is $\"2d\"$ \r
\n" ); document.write( "\n" ); document.write( "so,the $\"sum\"$ of $\"2d%2B3=12\"$ \r
\n" ); document.write( "\n" ); document.write( "find $\"d\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2d=12-3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2d=9\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"d=9%2F2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"d=4.5\"$ \r
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