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简介:
48+27= 81-27= 47-28= 57+38=
28+77= 66-27= 87-58= 90-53=
84-26= 71-28= 62-48= 78+44=
25+27= 24+58= 81-46= 81-32=
83-59= 100-33= 72-26= 91-63=
23+57= 95-46= 46+44= 74-57=
94-46= 47-28= 41-29= 73+19=
34+28= 51-23= 59+19= 95-58=
52-28= 34+28= 96-37= 65-39=
69+48= 85-58= 73-54= 28+96=
35+47= 47-28= 41-26= 57-49=