8-(7.14x3分之1-2又9分之2÷2.5)+0.1 怎么算?

8-(7.14x3分之1-2又9分之2÷2.5)+0.1 怎么算?
8-(7.14x3分之1-2又9分之2÷2.5)+0.1 怎么算?

8-(7.14x3分之1-2又9分之2÷2.5)+0.1 怎么算?
8-（7.14*1/3-2又2/9/2.5）+0.1
=8-（714/100*1/3-20/9*10/25）+0.1
=8-（714/300-8/9）+0.1
=8-671/450+0.1
=6又137/225

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