485+366=?,260+437=?,411+770=?
786-54=?,908-648=?,924-173=?
32+?=849,228+?=795,356+?=955
68*7=?,9*74=?,793*4=?
387/3=?,696/8=?,516/6=?
---
?-221=864-475,121+132+452+198=?
781-243=?+382,582+389+266-901=?
253+?+390=966,483+437-293-304=?
276+?-509=433,999-220-183-437=?
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