6+?=91,23+?=85,61+?=160 ?-13=65,?-38=83,?-31=168 99-?=21,163-?=53,287-?=195 31+75=?,42+156=?,168+138=? ?*2=12,8*?=24,?*9=36 --- ?-25=121-65,17+65+78+34=? 99-35=?+35,28+63+35-122=? 85+?+54=161,46+92-55-71=? 66+?-32=132,400-58-158-132=?

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一声笛起山前