分数乘除法简便运算15×1/6+13/21×14+5/6×15+13/21×7{1-(1/4+1/8)}÷3/42356÷2356 2356/23572201 7/48÷55

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分数乘除法简便运算15×1/6+13/21×14+5/6×15+13/21×7{1-(1/4+1/8)}÷3/42356÷2356 2356/23572201 7/48÷55

分数乘除法简便运算15×1/6+13/21×14+5/6×15+13/21×7{1-(1/4+1/8)}÷3/42356÷2356 2356/23572201 7/48÷55
分数乘除法简便运算
15×1/6+13/21×14+5/6×15+13/21×7
{1-(1/4+1/8)}÷3/4
2356÷2356 2356/2357
2201 7/48÷55

分数乘除法简便运算15×1/6+13/21×14+5/6×15+13/21×7{1-(1/4+1/8)}÷3/42356÷2356 2356/23572201 7/48÷55
15×1/6+13/21×14+5/6×15+13/21×7
=15×(1/6 + 5/6)+(7+14)×(13/21)
=15+13
=28
[1-(1/4+1/8)]÷3/4
=1× 4/3 -1/4 ×4/3 -1/8 ×4/3
=4/3 -1/3 -2/3
=1/3
2356÷2356 2356/2357
2201 7/48÷55
这两个符号没写清楚,你等下追问补充下!