157+624=?,227+582=?,405+620=?
736-59=?,842-249=?,803-311=?
88+?=836,264+?=822,358+?=912
18*8=?,35*4=?,50*10=?
48/?=?,88/4=?,99/9=?
---
?-242=751-403,158+295+302+166=?
850-249=?+362,375+102+241-639=?
242+?+313=950,463+275-118-382=?
268+?-401=273,999-351-164-374=?
感觉很孤单