\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "Write it as a division problem:\r\n" );
document.write( "\r\n" );
document.write( "
÷
\r\n" );
document.write( "\r\n" );
document.write( "Invert what we are dividing by, called the \"divisor\",\r\n" );
document.write( "and change the division to multiplication, use as \r\n" );
document.write( "askerisk \" * \" for multiplication rather than an \" x \" \r\n" );
document.write( "so we won't get it mixed up with the x's used for\r\n" );
document.write( "variables:\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "Let's just work on the part in the red rectangle below, and\r\n" );
document.write( "just bring the rest down until we finish that part:\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "The LCD in that part is
, so we multiply the first\r\n" );
document.write( "fraction by
and the second fraction by \r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "In each term, indicate the multiplication of the \r\n" );
document.write( "numerators and denominators by writing them as one \r\n" );
document.write( "fraction:\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "Next we multiply out the numerators \r\n" );
document.write( "(but not the denominators):\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "Now we combine the numerators over the LCD:\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "Now we can factor out a
in the numerator:\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "That's all we can do with that part, so let's\r\n" );
document.write( "put a red rectangle around the other part:\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "We can factor the numerator:\r\n" );
document.write( "\r\n" );
document.write( "
*
\r\n" );
document.write( "\r\n" );
document.write( "Next we indicate the multiplication of the numerators\r\n" );
document.write( "and denominators:\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "We can cancel the
's\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "We can cancel the
's\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "We can cancel the
's\r\n" );
document.write( "\r\n" );
document.write( "
\r\n" );
document.write( "\r\n" );
document.write( "and we are left with just the number\r\n" );
document.write( "\r\n" );
document.write( "
.\r\n" );
document.write( "\r\n" );
document.write( "All that work just to get 2! \r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" );
document.write( "