4+6=?,8+?=18,12+?=31 ?-2=8,?-15=25,?-14=38 42-?=13,42-?=28,60-?=27 18+28=?,55+38=?,102-88=? 3*6=?,3*7=?,3*8=? --- ?+6=28-11,32-?=19+13 13+?+25=52,11+22+33+44=? 12+?=40-?,24+12+17+31=? 15-?=?-23,22-17+18-12=?
4
+
6
=
8
+
=
18
12
+
=
31
-
2
=
8
-
15
=
25
-
14
=
38
42
-
=
13
42
-
=
28
60
-
=
27
18
+
28
=
55
+
38
=
102
-
88
=
3
×
6
=
3
×
7
=
3
×
8
=
+
6
=
28
-
11
32
-
=
19
+
13
13
+
+
25
=
52
11
+
22
+
33
+
44
=
12
+
=
40
-
24
+
12
+
17
+
31
=
15
-
=
-
23
22
-
17
+
18
-
12
=
大黄蜂变身