) The top at the left equals the top at the right and the down at the left equals the down at the right. Method I Top at left equals top at the right. 5=2n−1 5+1=2n 6=2n Divide both sides by 2
6
2
=n n=3
Method II Down at the left equals down at the right 2n=6 Divide both sides by 2 n=