..25×3/4-(-25)×1/2+25÷(-4)
问题描述:
..25×3/4-(-25)×1/2+25÷(-4)
(-4)÷「1.25+(2-5/4)×8」
答
25×3/4-(-25)×1/2+25÷(-4)
=25×3/4+25×1/2-25×1/4
=25×(3/4+1/2-1/4)
=25×1
=25