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47+30= 25+6= 71-41= 72-58= 66-8=
64-7= 50+35= 70-34= 92-4= 50-20+35=
48-29= 58-32= 79-63= 91-27=
①26+32=
②53+15=
③48+22=
④55-43=
⑤38-19=
⑥61-3=
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