document.write( "Question 785335: Mollie's brother is three years younger than twice her age. The sum of their age is 24. How old is Mollie? \n" ); document.write( "
Algebra.Com's Answer #477484 by harpazo(655)![]() ![]() You can put this solution on YOUR website! Mollie's brother = 2x-3\r \n" ); document.write( "\n" ); document.write( "Mollie = x\r \n" ); document.write( "\n" ); document.write( "The sum = x + 2x-3\r \n" ); document.write( "\n" ); document.write( "The sum = 24\r \n" ); document.write( "\n" ); document.write( "x + 2x-3 = 24\r \n" ); document.write( "\n" ); document.write( "3x - 3 = 24\r \n" ); document.write( "\n" ); document.write( "3x = 27\r \n" ); document.write( "\n" ); document.write( "x = 9\r \n" ); document.write( "\n" ); document.write( "Mollie is 9 years old. \r \n" ); document.write( "\n" ); document.write( "Her brother is 2(9)-3 or 15 years old.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |