document.write( "Question 905421: the sum of two numbers is 16. one number is 4 less than 3 times the other. find the numbers \n" ); document.write( "
Algebra.Com's Answer #549183 by harpazo(655)\"\" \"About 
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x + y = 16\r
\n" ); document.write( "\n" ); document.write( "x = 3y - 4\r
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\n" ); document.write( "\n" ); document.write( "3y - 4 + y = 16\r
\n" ); document.write( "\n" ); document.write( "4y - 4 = 16\r
\n" ); document.write( "\n" ); document.write( "4y = 16 + 4\r
\n" ); document.write( "\n" ); document.write( "4y = 20\r
\n" ); document.write( "\n" ); document.write( "y = 20/4\r
\n" ); document.write( "\n" ); document.write( "y = 5.\r
\n" ); document.write( "\n" ); document.write( "We now know that y = 5.\r
\n" ); document.write( "\n" ); document.write( "Let us plug y = 5 into either original equation to find x.\r
\n" ); document.write( "\n" ); document.write( "I will use x + y = 16.\r
\n" ); document.write( "\n" ); document.write( "x + 5 = 16\r
\n" ); document.write( "\n" ); document.write( "x = 16 - 5\r
\n" ); document.write( "\n" ); document.write( "x = 11\r
\n" ); document.write( "\n" ); document.write( "The two numbers are 5 and 11.
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