(十八分之五除以三分之一+十八分之五)乘以0.25

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(十八分之五除以三分之一+十八分之五)乘以0.25

(十八分之五除以三分之一+十八分之五)乘以0.25
(十八分之五除以三分之一+十八分之五)乘以0.25

(十八分之五除以三分之一+十八分之五)乘以0.25
(十八分之五除以三分之一+十八分之五)乘以0.25
=(5/18x3+5/18)x1/4
=5/18x(3+1)x1/4
=5/18x(4x1/4)
=5/18x1
=5/18
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=(5/18x3+5/18)x1/4
=5/18x(3+1)x1/4
=5/18x(4x1/4)
=5/18x1
=5/18

=(5/18*3+5/18*1)x1/4
=5/18x(3+1)x1/4
=5/18x(4x1/4)
=5/18x1
=5/18