数学计算题谢谢
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1→7/15-(7/15-1/3)
=7/15-7/15+1/3
=1/3
2→5/6+(4/5-5/6)
=5/6-5/6+4/5
=4/5
3→8/9-(8/9-1/4)
=8/9-8/9+1/4
=1/4
4→5/27÷(5/27×3/14)
=5/27×27/5×14/3
=1×14/3
=14/3
5→6/15x(7/18÷6/15)
=6/15×7/18×15/6
=6/15×15/6×7/18
=1×7/18
=7/18
=7/15-7/15+1/3
=1/3
2→5/6+(4/5-5/6)
=5/6-5/6+4/5
=4/5
3→8/9-(8/9-1/4)
=8/9-8/9+1/4
=1/4
4→5/27÷(5/27×3/14)
=5/27×27/5×14/3
=1×14/3
=14/3
5→6/15x(7/18÷6/15)
=6/15×7/18×15/6
=6/15×15/6×7/18
=1×7/18
=7/18
更多追问追答
追答
6→5/19÷(1/3×5/19)
=5/19×3/1×19/5
=3
7→(7/12+11/18)÷5/36
=7/12×36/5+11/18×36/5
=21/5+22/5
=43/5
采纳给你计算完,都是一些超级简单题,
分数相乘,分子乘分子,分母乘分母,分子与分母能约分就约分成最简分数
分数相除
把除数的分子与分母反过来就变成乘法了。
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