30.1/[(6.07+2.53)*0.7]简便
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30.1/[(6.07+2.53)*0.7]简便30.1/[(6.07+2.53)*0.7]简便30.1/[(6.07+2.53)*0.7]简便30.1÷[(6.07+2.53)*0.7]=30.1÷
30.1/[(6.07+2.53)*0.7]简便
30.1/[(6.07+2.53)*0.7]简便
30.1/[(6.07+2.53)*0.7]简便
30.1÷[(6.07+2.53)*0.7]
=30.1÷[8.6*0.7]
=30.1÷0.7÷8.6
=43÷4.3÷2
=5