document.write( "Question 95: the sum of two numbers in 9. the difference between five times of the first and four times of the second is 9. what are that numbers? \n" ); document.write( "
Algebra.Com's Answer #93 by terrtwo(10)\"\" \"About 
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translates Algebraically into:\r
\n" ); document.write( "\n" ); document.write( "x + y = 9 AND 5x - 4y = 9.\r
\n" ); document.write( "\n" ); document.write( "Solving the first eqaution for y, y = 9 - x.\r
\n" ); document.write( "\n" ); document.write( "Then substituting the first equation into the second:\r
\n" ); document.write( "\n" ); document.write( " 5x - 4(9 - x) = 9 --> 5x - 36 + 4x = 9 --> 9x - 36 = 9.\r
\n" ); document.write( "\n" ); document.write( "Adding 36 to both sides --> 9x -36 + 36 = 9 + 36 --> 9x = 45.\r
\n" ); document.write( "\n" ); document.write( "Divide both sides by 9 --> 9x/9 = 45/9 --> x = 5.\r
\n" ); document.write( "\n" ); document.write( "Not finished yet since we still must go back to find y by subsititing the known value of x into either of the orginal equations --> 5 + y = 9\r
\n" ); document.write( "\n" ); document.write( "Substact 5 from both sides --> 5 + y - 5 = 9 - 5 --> y = 4\r
\n" ); document.write( "\n" ); document.write( "Therefore x = 5, y = 4
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