8.4乘以十一分之四减去4.2除以八分之十一加上1.4÷1又五分之二的结果是多少?

2024-11-01 04:27:53
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8.4x4/11-4.2÷11/8+1.4÷1又2/5
=8.4x4/11-4.2x8/11+1.4÷7/5
=4.2x2x4/11-4.2x8/11+1.4x5/7
=4.2x8/11-4.2x8/11+1
=0+1
=1
望采纳,谢谢