文档介绍：...wd...
...wd...
..        1+14+2=          13+0+2=            7+5+1=
15+2+3=             1+8+5=           1+12+3=            9+1+10=
7+13+0=             8+3+6=           1+4+2=             0+16+1=
3+9+1=              0+10+7=          2+9+1=             0+4+9=
11-6-5=          6-1-0=          17-7-8=         20-3-6=
12-5-4=          17-6-1=         9-4-4=          16-13-1=
19-7-11=         18-13-4=        20-12-5=        15-2-8=
5-3-0=          18-5-8=         16-6-7=         10-1-8=
7-4-3=           13-9-3=         19-4-6=         12-9-1=
19 - 9=           11 - 9=           16 - 9=          17 - 9=
18 - 9=           16 - 9=           13 - 9=          16 - 9=
12 - 9=           19 - 9=           18 - 9=          11 - 9=
...wd...
...wd...
...wd...
12 - 9=           14 - 9=           13 - 9=          13 - 9=
16 - 9=           14 - 9=           14 - 9=          18 - 9=
11-9+4=           15-9+9=           19-9+8=           17-9+8=
11-9+8=           13-9+9=           12-9+4=           14-9+5=
17-9+8=           10-9+5=           13-9+7=           12-9+1=
15-9+3=           14-9+3=           14-9+3=           13-9+5=
14-9+5=           11-9+3=           10-9+5=           11-9+4=
10+8-9=           6+5-9=           9+6-9=             6+6-9=
10+6-9=           5+8-9=           5+8-9=             7+9-9=
10+5-9=           6+7-9=           10+5-9=            8+8-9=
7+4-9=            4+9-9=           5+8-9=             8+8-9=
8+5-9=            5+6-9=           8+4-9=             8+6-9=
16 - 8=          14 - 8=            14 - 7=            14 - 7=
12 - 7=          15 - 8=            14 - 7=            17 - 7=
14 - 7=          13 - 8=            16 - 8=            15 - 7=
12 - 8=          13 - 8=            17 -