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(2.1+6.9÷0.15)÷0.1怎么简便计算?
1个回答
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(2.1+6.9÷0.15)÷0.1
=(2.1+6.9÷0.3÷0.5)÷0.1
=(2.1+23÷0.5)÷0.1
=(2.1+46)÷0.1
=48.1÷0.1
=481
=(2.1+6.9÷0.3÷0.5)÷0.1
=(2.1+23÷0.5)÷0.1
=(2.1+46)÷0.1
=48.1÷0.1
=481
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