4+?=10,9+?=18,7+?=22 ?-8=2,?-12=12,?-13=8 20-?=14,36-?=28,44-?=12 16+7=?,75+28=?,105-25=? 1*1=?,1*2=?,1*3=? --- ?+23=35-7,9+?=11+18 6+?+5=30,18+19+20+21=? 24+?=50-?,21+17+35+24=? 23-?=32-?,42-28+33-39=?
4
+
=
10
9
+
=
18
7
+
=
22
-
8
=
2
-
12
=
12
-
13
=
8
20
-
=
14
36
-
=
28
44
-
=
12
16
+
7
=
75
+
28
=
105
-
25
=
1
×
1
=
1
×
2
=
1
×
3
=
+
23
=
35
-
7
9
+
=
11
+
18
6
+
+
5
=
30
18
+
19
+
20
+
21
=
24
+
=
50
-
21
+
17
+
35
+
24
=
23
-
=
32
-
42
-
28
+
33
-
39
=