7.
a) 25/45 = 5/9
b) 18/30 = 3/5
c) 36/100 = 9/25
8.
a) 1/3 = 30/90
b) 6/7 = 30/35
c) 15/23 = 30/46
9.
a) 1 3/7 = 10/7
b) 4 1/6 = 25/6
10.
a) 14/3 = 4 2/3
b) 20/5 = 4
c) 56/7 = 8
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