(7/95÷20/19+0.25)×1.125如何简便算
问题描述:
(7/95÷20/19+0.25)×1.125如何简便算
答
(7/95÷20/19+0.25)×1.125
=(7/95÷20/19+1/4)×9/8
=(7/95×19/20+1/4)×9/8
=(7/5×1/20+1/4)×9/8
=(7/100+25/100)×9/8
=32/100×9/8
=8/25×9/8
=9/25