Find the value of n.
1) 12/15 = n/5
2) 1/10 = 7/n
3) 5/10 = n/30
4) 4/n = 15/30
5) 7/9 = 56/n


Add/Subtract the following
1) 3/2 + 1/6 =
2) 4/7 + 2/6 =
3) 6/9 + 5/7 =
4) 4/5 - 1/3 =
5) 7/9 - 1/2 =