4×(-15)×(-7/8+1又3/4)-7/12) 4×(-15)×(-7/8+1又3/4)-7/12) 简便计算~

问题描述:

4×(-15)×(-7/8+1又3/4)-7/12)
4×(-15)×(-7/8+1又3/4)-7/12) 简便计算~

按计算器啊 很简单的

=-60×0-7/12
=-7/12

还有一个括弧在那个位置,我就认为是这样的:4×(-15)×((-7/8+1又3/4)-7/12)
=-60×(7/8-7/12)
=-60×7/24
=-14.5