如题所述
第1个回答 2016-10-04
等于
25×(3/4-1/2-1/4)
=25×0
=0
这就是答案哦!
25×(3/4-1/2-1/4)
=25×0
=0
这就是答案哦!
第2个回答 2016-10-04
25x3/4+(-25)x1/2+25x(-1/4)
=25x3/4-25x1/2-25x1/4
=25x(3/4-1/2-1/4)
=25x1
=25
=25x3/4-25x1/2-25x1/4
=25x(3/4-1/2-1/4)
=25x1
=25