57++18=98 89-46-=21
+24+35=87 64+-18=80
76-866 5548+7 65-7-3023
34+5088 5662-4 45-2078-54
①94-26-28=
②25+37+16=
③53-27+18=
④53+20-35=
⑤73-17-26=
⑥18+33+47=