Mathematics
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    70+23= 86-55= 93-69= 69+15= 90-43= 52+17= 89-52= 69-28= 67-43= 93-75= 64-36= 58-28=
    44+22= 79-15= 59-35= 33+11= 50-34= 83-63= 66-57= 89-26= 66-53=
    25+13= 62+43= 61+12= 33-21= 76+29= 82-30= 94-63= 34-14= 89-47=
     55-28= 86-31= 80+17=
    85-43= 40-19= 81-33= 93-38= 91-76= 79-21= 91-43= 78-38= 85-55= 55-28= 86-31= 80+17=
    23-14= 94-69= 28+15= 91-90= 53-20= 67-36= 87-72= 18+14= 85-31=
    72-47= 94-38= 66-51= 22-11= 99-87= 79-26= 57-13= 59-24= 44-13=
     69-3= 77-15= 84-13=
    99-52= 97-76= 81-45= 68-12= 96-22= 88-20= 78-30= 88-6= 62-41= 69-3= 77-15= 84-13=
    95-5= 34-6= 76-39= 18-35= 41-31= 49-11= 45-10= 70-31= 85-17=
    88-10= 84-9= 82-0= 68-7= 39+12= 19-13= 47-47= 57-54= 88-52=
     44-36= 30-30= 87-44=
    65-30= 88-58= 58-39= 63-34= 70-15= 91-46= 73-53= 64-34= 78-57= 44-36= 30-30= 87-44=
    16+34= 87-40= 44-37= 60-33= 67-12= 66-13= 54+11= 89-59= 96-23=
    82-49= 76-34= 96-25= 29-29= 93-54= 59-13= 84-22= 50-22= 81-29=
     69-13= 77-25= 84-10=
    5/2+10
    95-15= 34-16= 76-49= 18-5= 41-13= 49-21= 45-30= 70-16= 85-37=
    10+5/2
    88-20= 84-19= 82-10= 68-17= 39+11= 19-12= 40-17= 57-24= 88-62=

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