34.5*76.5-123*1.45-345*6.42如何简算?
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34.5*76.5-123*1.45-345*6.42如何简算?
如何简算?过程详细不要把重要的忽略了!
如何简算?过程详细不要把重要的忽略了!
![34.5*76.5-123*1.45-345*6.42如何简算?](/uploads/image/z/5710438-46-8.jpg?t=34.5%2A76.5-123%2A1.45-345%2A6.42%E5%A6%82%E4%BD%95%E7%AE%80%E7%AE%97%3F)
34.5*76.5-123*1.45-345*6.42
=345*7.65-123*1.45-345*6.42
=345*(7.65-6.42)-123*1.45
=345*1.23-123*1.45
=3.45*123-123*1.45
=123*(3.45-1.45)
=123*2
=246
=345*7.65-123*1.45-345*6.42
=345*(7.65-6.42)-123*1.45
=345*1.23-123*1.45
=3.45*123-123*1.45
=123*(3.45-1.45)
=123*2
=246