10 48 10 12 42 45 13 42 90 70 4 1 93 5 19 3 20 6 4 10 0 48 12 70 22
2
+
2
=
6
-
3
=
4
-
4
=
5
+
5
=
4
+
8
=
3
-
2
=
10
+
2
=
10
+
10
=
15
-
5
=
30
+
12
=
18
-
5
=
25
+
23
=
16
-
10
=
50
-
40
=
30
+
15
=
22
+
20
=
72
-
2
=
60
+
30
=
20
+
28
=
15
-
10
=
11
+
11
=
11
+
8
=
80
-
10
=
91
+
2
=
45
-
5
=