3
/
6
+
5
/
9
=
____________________
/
18
+
____________________
/
18
=
____________________
/
____________________
4
/
8
+
7
/
12
=
____________________
/
24
+
____________________
/
24
=
____________________
/
____________________
=
____________________
/
____________________
2
/
10
+
1
/
15
=
____________________
/
30
+
____________________
/
30
=
____________________
/
____________________
=
____________________
/
____________________
7
/
12
-
2
/
6
=
____________________
/
12
-
____________________
/
12
=
____________________
/
____________________
=
____________________
/
____________________
4
/
7
-
2
/
21
=
____________________
/
21
-
____________________
/
21
=
____________________
/
____________________
