Related Post: 2 3m 3 5m 4 4 (- 3m 2 )- 5m 3 4m 5m 2 3m 3 5m 2 4m 6 3m 3 4m 2 5m 4 M 1 2 3m 4 5 3 5m (- 3m )+( 2 4n )-( 5m 3 8n (- 3m 4 M 3 )-( 5m 2 M 4 3(3m-2)=2(3m+3)