document.write( "Question 520900: Mindy has 2 more than 3 times as many rocks as Fiona. Together they have 54 rocks. How many rocks does Fiona have? \n" ); document.write( "
Algebra.Com's Answer #346266 by jlshires(17) ![]() You can put this solution on YOUR website! If Mindy has 2 more than 3 times what Fiona does, substitute in x.\r \n" ); document.write( "\n" ); document.write( "Let x= # Fiona's rocks \n" ); document.write( "Let 3x+2= # of Mindy's rocks ((3x is three times the number of Fiona's rocks, then +2 is the two more.)\r \n" ); document.write( "\n" ); document.write( "Together, they have 54 rocks. So Fiona's rocks plus Mindy's rocks. \r \n" ); document.write( "\n" ); document.write( "(x) + (3x+2) = 54 \n" ); document.write( "add like symbols\r \n" ); document.write( "\n" ); document.write( "4x + 2 = 54 \n" ); document.write( " -2 -2 \n" ); document.write( "subtract 2 from both sides\r \n" ); document.write( "\n" ); document.write( "4x = 52 \n" ); document.write( "--- --- \n" ); document.write( "4 4\r \n" ); document.write( "\n" ); document.write( "Divide both sides by 4\r \n" ); document.write( "\n" ); document.write( "x=13\r \n" ); document.write( "\n" ); document.write( "Since x is the number of rocks Fiona has, Fiona has 13 rocks. \n" ); document.write( " |