(65\6+65\11)\(5\6+5\11)怎么简便运算急~.
问题描述:
(65\6+65\11)\(5\6+5\11)怎么简便运算急~.
答
(65/6+65/11)/(5/6+5/11)
=65(1/6+1/11)/[5(1/6+1/11)]
=65/5=13
答
=13.
大分数线分子分母同乘以66,会得65(6+11)/5(6+11)=65/5=13.
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