document.write( "Question 587049: The perimeter of a triangle is 69 cm. Side a is 5 cm shorter than side b. Side c is twice as long as side a. Find the length of each side. I need to know how to do it in 2 equations. Thanx! \n" ); document.write( "
Algebra.Com's Answer #373959 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The perimeter of a triangle is 69 cm. Side a is 5 cm shorter than side b. Side c is twice as long as side a. Find the length of each side. I need to know how to do it in 2 equations. \n" ); document.write( "---------------------------- \n" ); document.write( "Equations: \n" ); document.write( "a = b-5 \n" ); document.write( "c = 2a \n" ); document.write( "------- \n" ); document.write( "a + b + c = 69 \n" ); document.write( "a + (a+5) + 2a = 69 \n" ); document.write( "4a + 5 = 69 \n" ); document.write( "4a = 64 \n" ); document.write( "a = 16 \n" ); document.write( "b = a+5 = 21 \n" ); document.write( "c = 2a = 32 \n" ); document.write( "----------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |