18-3=
12+5=
36+5=
55-3=
16-5=
58-6=
8+80=
49-9=
11+4=
9+22=
17-2=
25+4=
39+7=
7+4=
5+60=
7+63=
13+6-2=
8+3+4=
16+8-3=
85-30+8=
11-8=
17-9=
16-7=
3+8-9=
13-5=
13-9=
18-9=
12-5+8=
12-7=
12-8=
17-8=
13-8+6=
16-9=
12-3=
12-9=
4+9-7=
11-7=
16-8=
14-9=
7+7-8=
5+915 14-94 168+8 917-9
(个)
< < < <
x
?
2.4
y
1.5
0.6