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简介:
9.6+20.03-11.03 12.01+7.12-8.01
=9.6+(20.03-11.03) =12.01-8.01+7.12
=9.6+9 =4+7.12
=18.6 =11.12
12.99+10.48-4.99 4.37+15.14-0.14
=12.99-4.99+10.48 =4.37+(15.14-0.14)
=8+10.4 =4.37+15
=18.48 =19.37
16.07+3.95-10.07 16.32+2.94-6.32
=16.07-10.07+3.95 =16.32-6.32+2.94
=6+3.95 =10+2.94
=9.95 =12.94
1.14+19.36-0.36 1.17+19.75-7.75
=1.14+(19.36-0.36) =1.17+(19.75-7.75)
=1.14+19 =1.17+12
=20.14 =13.17
0.33+17.89-16.89 4.16+15.16-9.16
=0.33+(17.89-16.89)=4.16+(15.16-9.16)
=0.33+1 =4.16+6
=1.33 =10.16