86+?=713,451+?=883,317+?=973
427-69=?,780-126=?,852-337=?
326+451=?,252+589=?,315+678=?
40/4=?,24/2=?,30/?=?
22*4=?,19*5=?,30*3=?
---
?-327=790-151,189+232+315+278=?
731-218=?+367,326+127+233-527=?
157+?+341=839,463+247-138-483=?
263+?-419=207,999-325-258-312=?
诗成流水上