Answer: Length of L is 50/8 _______________ Length of n is 10 _______________ length of m is 150/8 Explanation: put 1/3m instead of L. as the perimeter is 65, 1/3m+ 1/3m+m-15+m=65 2/3m+2m=50 8/3m=50 m= 50*3/8=150/8 m=18.75 L=150/8* 1/3=150/24= 50/8 n= 50/8+ 150/8-15 n= 200/8-15= 80/8= 10 Hope it helps!