463+351=?,229+472=?,404+759=?
738-29=?,984-664=?,904-154=?
54+?=852,279+?=723,328+?=990
48*7=?,61*9=?,248*4=?
688/8=?,825/5=?,942/6=?
---
?-250=895-449,124+167+455+168=?
729-280=?+333,516+320+244-932=?
236+?+337=915,406+495-260-389=?
217+?-529=491,999-201-181-488=?
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