Fraction Arithmetic
4
−
1
=
9
12
4
−
7
=
5
12
5
−
3
=
12
10
3
−
1
=
5
10
7
+
1
=
12
10
2
+
5
=
3
6
3
−
2
=
4
5
2
+
2
=
5
5
5
−
3
=
12
10
2
+
3
=
9
5
5
−
1
=
12
4
5
−
7
=
6
12
7
+
11
=
8
12
1
+
7
=
8
8
7
−
5
=
9
9