3/8×5/4+5/8÷(4/5)脱式怎么?

如题所述

第1个回答  2020-10-09
原式
=5/4×(3/8十5/8)
=1又1/4
第2个回答  2020-10-09
=3/8×5/4+5/8×5/4
=(3/8+5/8)×5/4
=1×5/4
=5/4
第3个回答  2020-10-09
3/8×5/4+5/8÷(4/5)
=3/8×5/4+5/8x5/4
=(3/8+5/8)x5/4
=1x5/4
=5/4
第4个回答  2020-10-09
3/8×5/4+5/8÷(4/5)
=3/8×5/4+5/8x5/4
=(3/8+5/8)x5/4
=1x5/4
=5/4
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