1、47-19+21= 91-23+34= 69-8+17= 89-26+8=95-28+27= 71-24+26= 57+6-28= 53-41+24=44+25-34= 49-6+67= 67+9-24= 97-26+17=64-19+52= 82-17+46= 66-9+27= 78-6+18=89-6+31= 57+16-39= 95-28+13= 67-6+15=85-14+28= 100-34+47= 81-25+26= 89-18+26=37+20+17= 94-27+16= 33+15-28= 28+54-16=73+（18-4）= 63-9+14= 43-9+28= 26+54-
2、27=91-23+14= 90-34-27= 33-9+16= 63-（32-19）=44+28-16= 69-8+15= 70-34-12= 95-28-47= 38+30-9= 24-10+48= 38+17-25= 47-19+21=52+8-24= 80-43-19= 52+8-24= 89-18-9=60-43-8= 50-33+18= 91-23+14= 28+21+19=45-23+16= 91-24+8= 24-10+36= 70-34+27=39-12+28= 85-32+43= 48-36+14= 78-6+21=28+37-47= 44-9+27= 39+54-67= 63-15+37=
