17-8=           9+7=             8+5+2=

8+=18         +=14        19-10-9=

17-9+2=         5+4+7=           8+7-9=

19-9-6=          12-9-3=          9+5+5=

4+2+3=            10-5-2=          10+4-4=         8+2-7=

18-8+6=           9-2+3=           4+5-6=          15-3-6=

□-〇=              □+〇+〇=

8+2=       15+3=         7-7=         7+6+4=

1+6=        10-0=         11-1=         5+5-5=

10-8=        8+9=         2+5=         18-2-6=

6-6=         5+4=         15-3=         7+6+3=

0+11=      13-3=         7+8=         19-5+4=

16+2=       3+8=         12-10=         10-4+8=