document.write( "Question 1007877: One positive integer is twenty-five less than five times another integer. Their product is 70. Find the integers.
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Algebra.Com's Answer #623880 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Call them x and y. We have \n" ); document.write( "x = 5y - 25 \n" ); document.write( "and \n" ); document.write( "xy = 70 \n" ); document.write( "Substitute and get \n" ); document.write( "(5y - 25)y = 70 \n" ); document.write( "5y^2 - 25y - 70 = 0 \n" ); document.write( "y^2 - 5y - 14 = 0 \n" ); document.write( "(y - 7)(y + 2) = 0 \n" ); document.write( "y = 7 and y = -2 \n" ); document.write( "Since you want positive, \n" ); document.write( "y = 7 so that \n" ); document.write( "x = 10 \n" ); document.write( " |