15+43= 100-79= 82-54= 99-23=
50+22= 51+45= 87-55= 73+8=
48-11= 48+44= 85-23= 17+68=
14+55= 91-74= 39+17= 50-7=
36-11= 46+52= 21+74= 59+11=
57+36= 82+10= 30+58= 28-13=
71-4= 33+56= 39+51= 88-2=
97-23= 30+47= 70-18= 63+18=
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