64-7= 58-3= 5+43= 66-2=
53-8= 11-8= 4+55= 14-7=
16-9= 49+3= 25+20= 12-8=
22+8+9= 14-9+33= 42+5-7= 61-4+20=
①43+26=
②38+57=
③68-45=
④50-39=
⑤16+64=
⑥84-16=