3.8-1÷(0.75+1⼀3)×1又3⼀4用简便运算怎么算?

2024-12-04 15:27:39
推荐回答(3个)
回答(1):

3.8-1÷(0.75+1/3)×1又3/4
=3.8-1÷(3/4+1/3)x7/4
=3.8-1÷13/12x7/4
=3.8-12/13x7/4
=3.8-21/13
=3又4/5-1又8/13
=2又12/65

回答(2):

脱式计算
3.8-1÷(0.75+1/3)x1又3/4
=3.8-1÷13/12x7/4
=3.8-12/13x7/4
=3.8-21/13
=2又12/65

回答(3):

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