(5.6×3×1.7×0.9)÷(51×0.14×4×18)=?(15\56-13\42+11\30-9\20+7\12-1\3)×2.005×390

来源:学生作业帮助网 编辑:作业帮 时间:2024/09/17 08:48:06
(5.6×3×1.7×0.9)÷(51×0.14×4×18)=?(15\56-13\42+11\30-9\20+7\12-1\3)×2.005×390
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(5.6×3×1.7×0.9)÷(51×0.14×4×18)=?(15\56-13\42+11\30-9\20+7\12-1\3)×2.005×390
(5.6×3×1.7×0.9)÷(51×0.14×4×18)=?(15\56-13\42+11\30-9\20+7\12-1\3)×2.005×390

(5.6×3×1.7×0.9)÷(51×0.14×4×18)=?(15\56-13\42+11\30-9\20+7\12-1\3)×2.005×390
﹙5.6×3×1.7×0.9﹚÷﹙51×0.14×4×18﹚
=﹙ 0.56÷0.14﹚×﹙3×17÷51﹚×﹙0.9÷18﹚÷4
=4×1÷4×0.05
=0.05
﹙15/56-13/42+11/30-9/20+7/12-1/3﹚×2.005×390
=﹙1/7+1/8-1/6-1/7+1/5+1/6-1/4-1/5+1/+1/4-1/3﹚×2.005×390
=﹙1/8-1/3﹚×2.005×390
=﹣5/24×2.005×390
=523/160

(5.6×3×1.7×0.9)÷(51×0.14×4×18)=0.05
(15\56-13\42+11\30-9\20+7\12-1\3)×2.005×390=97.74375