125+2.125+3.125.+80.125 (要写过程)

maxingfeng662022-10-04 11:39:541条回答

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xiaoyu6013 共回答了19个问题 | 采纳率100%
原式=125+2.125+2.125+1+2.125+2.2.125+78
=125+2.125x(1+78)+(1+2+3+4+5+6.+78)
=125+2.125x79+(1+78)÷2x78
=125+167.875+3081
=3373.875
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