document.write( "Question 56978: A triangle has 3 sides. 3x +7, 4x - 9, 5x + 6. What is the expression that represents its perimeter? \n" ); document.write( "
Algebra.Com's Answer #38729 by rchill(405)![]() ![]() ![]() You can put this solution on YOUR website! To calculate the perimeter, just add up all the sides: 3x+7+4x-9+5x+6. Now combine like terms to get 12x+4. \n" ); document.write( " |