六分之五乘(三分之二减二分之一除以四分之五的商)
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回答:
5/6×(2/3-1/2÷5/4)
=5/6×(2/3-1/2×4/5)
=5/6×(2/3-2/5)
=5/6×2/3-5/6×2/5
=5/9-1/3
=5/9-3/9
=2/9
先乘除后加减,有括号的先算括号里面的
5/6×(2/3-1/2÷5/4)
=5/6×(2/3-1/2×4/5)
=5/6×(2/3-2/5)
=5/6×2/3-5/6×2/5
=5/9-1/3
=5/9-3/9
=2/9
先乘除后加减,有括号的先算括号里面的
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根据题意得:
5/6*[2/3-(1/2)/(5/4)]
=5/6*[2/3-(1/2)*4/5]
=5/6*(2/3-2/5)
=5/6*(10/15-6/15)
=5/6*(4/15)
=2/9
5/6*[2/3-(1/2)/(5/4)]
=5/6*[2/3-(1/2)*4/5]
=5/6*(2/3-2/5)
=5/6*(10/15-6/15)
=5/6*(4/15)
=2/9
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5/6×(2/3 - 1/2)÷4/5
=5/6 ×(1/6)× 5/4
=25/216
=5/6 ×(1/6)× 5/4
=25/216
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