43+?=279,186+?=300,127+?=451
132-42=?,397-164=?,416-298=?
128+131=?,48+269=?,155+375=?
8*3=?,7*9=?,5*4=?
21/3=?,36/6=?,56/?=?
---
?-137=360-108,73+87+43+251=?
354-214=?+68,172+56+138-313=?
73+?+82=203,126+96-73-131=?
164+?-139=255,500-172-218-95=?
落日矫乌云