document.write( "Question 552910: The sum of two numbers is 21 and their difference is 5. What are the number? \n" ); document.write( "
Algebra.Com's Answer #360579 by rajgahir(2)\"\" \"About 
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Let the no. be x and y.
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\n" ); document.write( "x + y = 21 ------eq(1)
\n" ); document.write( "x - y = 5 ------eq(2)
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\n" ); document.write( "Add eq(1) and eq(2)
\n" ); document.write( "now we will eliminate y 'cause +y -y =0
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\n" ); document.write( "2x = 26
\n" ); document.write( " x = 26/2\r
\n" ); document.write( "\n" ); document.write( " x = 13 now we have value of x , put the value of x in eq(2).\r
\n" ); document.write( "\n" ); document.write( "13 - y = 5
\n" ); document.write( " -y = 5 -13
\n" ); document.write( " -y = -8 i;e y = 8\r
\n" ); document.write( "\n" ); document.write( "So, the no.s are 13 and 8
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