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简介:
20.8+3.47-2.8=21.47 4.97+11.9-7.9=8.97
18.87+1.76-0.87=19.76 20.86+0.44-0.86=20.44
20.57+10.85-2.57=28.85 1.25+18.64-7.64=12.25
7.38+8.09-5.38=10.09 3.45+17.09-9.09=11.45
14.14+1.13-7.14=8.13 12.28+10.17-0.28=22.17
10.41+7.17-1.41=16.17 13.46+3.56-3.46=13.56
17.73+4.36-8.73=13.36 20.79+0.76-5.79=15.76
0.29+18.39-11.39=7.29 3.26+4.52-2.52=5.26
5.39+9.1-8.1=6.39 20.18+6.08-4.18=22.08
16.92+5.79-0.92=21.79 19.91+4.1-0.91=23.1