6+?=12,7+?=13,12+?=24 ?-7=3,?-13=14,?-22=28 34-?=10,25-?=9,50-?=26 28+15=?,75+25=?,108-40=? 2*5=?,2*6=?,2*7=? --- ?+8=27-3,40-?=12+4 12+?+12=120,20+21+22+23=? 15+?=42-?,17+28+14+33=? 33-?=15-?,44-18+29-14=?
6
+
=
12
7
+
=
13
12
+
=
24
-
7
=
3
-
13
=
14
-
22
=
28
34
-
=
10
25
-
=
9
50
-
=
26
28
+
15
=
75
+
25
=
108
-
40
=
2
×
5
=
2
×
6
=
2
×
7
=
+
8
=
27
-
3
40
-
=
12
+
4
12
+
+
12
=
120
20
+
21
+
22
+
23
=
15
+
=
42
-
17
+
28
+
14
+
33
=
33
-
=
15
-
44
-
18
+
29
-
14
=
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