简便算:【0.3+(2又2/3-1.25)除以2又5/6】*1又3/4

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简便算:【0.3+(2又2/3-1.25)除以2又5/6】*1又3/4简便算:【0.3+(2又2/3-1.25)除以2又5/6】*1又3/4简便算:【0.3+(2又2/3-1.25)除以2又5/6】*

简便算:【0.3+(2又2/3-1.25)除以2又5/6】*1又3/4
简便算:【0.3+(2又2/3-1.25)除以2又5/6】*1又3/4

简便算:【0.3+(2又2/3-1.25)除以2又5/6】*1又3/4
【0.3+(2又2/3-1.25)除以2又5/6】*1又3/4
= 【0.3+(2+2/3-5/4)÷ (2+5/6)】*(1+3/4)
= 【3/10+(2+2/3-5/4)÷ (17/6)】* 7/4
= 【3/10+(17/12)* (6/17)】* 7/4
= (3/10+ 1/2 )* 7/4
= (3/10+ 5/10 )* 7/4
= 8/10 * 7/4
= 7/5

7/5