document.write( "Question 313407: Find two numbers whose sum is 7 and whose difference is 23. \n" ); document.write( "
Algebra.Com's Answer #224095 by blwinbbbles(106)![]() ![]() You can put this solution on YOUR website! Start by writing equations..We know that:\r \n" ); document.write( "\n" ); document.write( "x+y=7 \n" ); document.write( "x-y=23 we can use the elimination process by adding the two equations together and solving\r \n" ); document.write( "\n" ); document.write( "so: \n" ); document.write( "2x = 30 \n" ); document.write( "x = 15\r \n" ); document.write( "\n" ); document.write( "Now put it back in and solve:\r \n" ); document.write( "\n" ); document.write( "15 + y = 7 \n" ); document.write( "y = -8\r \n" ); document.write( "\n" ); document.write( "So your answer is (15,-8) \n" ); document.write( " |