448+375=?,275+474=?,455+725=?
775-50=?,910-626=?,950-120=?
36+?=883,291+?=793,333+?=966
47*7=?,9*93=?,368*4=?
368/8=?,795/5=?,918/6=?
---
?-203=890-490,100+186+408+102=?
790-222=?+303,530+354+228-942=?
276+?+312=940,441+432-233-369=?
298+?-561=493,999-241-182-475=?
凹凸司机平