\r\n" );
document.write( "\r\n" );
document.write( " 8x - 7y = 10\r\n" );
document.write( "\r\n" );
document.write( "In place of the x write (
).\r\n" );
document.write( "In place of the y write (-1):\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( " 8(
) - 7(-1) = 10\r\n" );
document.write( "\r\n" );
document.write( "Now simplify: 8(
) is 3 because the 8's cancel, and\r\n" );
document.write( "-7(-1) becomes +7, so we have:\r\n" );
document.write( "\r\n" );
document.write( " 3 + 7 = 10\r\n" );
document.write( "\r\n" );
document.write( " 10 = 10\r\n" );
document.write( "\r\n" );
document.write( "Since the end result is the same number on both sides of\r\n" );
document.write( "the equal sign, that tells us that (
,-1) is a \r\n" );
document.write( "solution to the equation 8x - 7y = 10.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" );
document.write( "