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42+8= 52-6= 37+6= 26+7=
18-8= 19-5= 4+14= 15-6=
20-5= 2+16= 60+( )=75 ( )=19+20
12+6= 47+4= 16-8= 6+11=
14+( )=18 ( )-16=4 ( )+6=56 ( )-2=42
3×4= 15÷5= 4×6= 4×2+8=
30÷5= 5×5= 25+5= 3×6+5=
5×1= 6÷1= 3×4= 5×5-8=
18÷6= 30÷6= 4÷2= 3×5-5=
□○□○□=□
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