94.5÷（28.5÷3.8）×5.5简便算？
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94.5÷(28.5÷3.8)x5.5
=94.5÷7.5x5.5
=12.6x5.5
=12.6x(5+0.5)
=63+6.3
=69.3
94.5÷（28.5÷3.8）×5.5
=189/2 ÷ (57/2 ÷ 19/5)×11/2
=189/2÷15/2 ×11/2
=63/5 × 11/2
=693/10
=69.3
=94.5÷7.5x5.5
=12.6x5.5
=12.6x(5+0.5)
=63+6.3
=69.3
94.5÷（28.5÷3.8）×5.5
=189/2 ÷ (57/2 ÷ 19/5)×11/2
=189/2÷15/2 ×11/2
=63/5 × 11/2
=693/10
=69.3
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