1/2-4乘以1/4除以4 5/14除以[6/7乘 - 知识问答

1/2-4乘以1/4除以4 5/14除以[6/7乘以（2/3+1/6)] 36乘以（2/9+1/4）都要简便算法啊!

1个回答

1/2-4乘以1/4除以4
=1/2-1/4
=1/4
5/14除以[6/7乘以（2/3+1/6)]
=5/14÷【6/7×2/3+6/7×1/6】
=5/14÷【4/7+1/7】
=5/14÷5/7
=5/14×7/5
=1/2
36乘以（2/9+1/4）
=36×2/9+36×1/4
=8+9
=17

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