2/5×3/4+1/5÷19/10要过程
1个回答
2/5 *(3/4 +1/5 )*10/19
=2/5 *(15/20+4/20)*10/19
=2/5*19/20*10/19
=38/100*10/19
=380/1900
=1/5
相关问题
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简便运算 (7.6×0.76×2.4)÷(3/4×4/5×19/10)
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