8分之3÷75%—19分之2×38% 怎么算?

问题描述:

8分之3÷75%—19分之2×38% 怎么算?

8分之3÷75% - 19分之2×38%
= 3/(8*75%) - (2*38%)/19
= 3/(8*0.75) - (2*0.38)/19
= 3/6 - 0.76/19
= 0.5 - 0.04
= 0.46
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=3/8 x 4/3- 19/2 x(38/100)= 1/2 -2/50=22/50

8分之3÷75%—19分之2×38%
=3/8÷3/4-2/19x19/20
=1/2-1/10
=2/5

3÷8×100÷75-2÷19×38÷100