
(23分之5+25分之5÷3分之1)×25% 快!!!
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(23分之5+25分之5÷3分之1)×25%
=5/23 + 5/25 ÷ 1/3 × 0.25
=5/23 + 1/5 × 3 1/4
=5/23 + 3/20
=(5×20)/460 + (3×23)/460
=169/460
=5/23 + 5/25 ÷ 1/3 × 0.25
=5/23 + 1/5 × 3 1/4
=5/23 + 3/20
=(5×20)/460 + (3×23)/460
=169/460
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