-100×1/8﹣0.125×35.5+14.5×(-12.5%)

问题描述:

-100×1/8﹣0.125×35.5+14.5×(-12.5%)
用简便方法

1/8=0.125,提取共因数原式=0.125X[(-100)+(-35.5)+(-14.5)]
=0.125X(-150)
= -150/8
= -75/4
=-18.75