6.17×41.9+6.71×57.1+6.71怎么简算
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6.17×41.9+6.71×57.1+6.71怎么简算
6.17×41.9+6.71×57.1+6.71怎么简算
6.17×41.9+6.71×57.1+6.71怎么简算
6.17×41.9+6.71×57.1+6.71
=(6.71-0.54)x41.9+6.71×57.1+6.71x1
=6.71x41.9-0.54x41.9+6.71×57.1+6.71x1
=(41.9+57.1+1)x6.71-0.54x41.9
=100x6.71-0.54x41.9
=671-22.626
=648.374
6.17×41.9+6.71×57.1+6.71怎么简算
0.14x+24.9=57.1
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