84右19分之4乘以1,375加1,375加105右19分之5乘以0.9

2025-01-03 04:45:57
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回答1:

解:84右19分之4乘以1,375加1,375加105右19分之5乘以0.9
=1600/19 * 1375/1000 + 1375/1000 +2000/19 * 9/10
=2200/19 + 1375/1000 + 1800/19
=4000/19 + 1375/1000
=211又17125/19000
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