1个回答
展开全部
1.)
7/18-1/2÷3/4-1/3
=7/18-1/2x4/3-1/3
=7/18-2/3-1/3
=7/18-1
= -11/18
(2.)
1/6+3/4×2/3÷2
=1/6+1/2÷2
=1/6+1/4
=2/12+3/12
=5/12
(3.)
4/25÷【(2/5+1/3)×9/11】
=4/25÷【(6/15+5/15)×9/11】
=4/25÷【(11/15)×9/11】
=4/25÷(3/5)
=4/25x5/3
=4/15
7/18-1/2÷3/4-1/3
=7/18-1/2x4/3-1/3
=7/18-2/3-1/3
=7/18-1
= -11/18
(2.)
1/6+3/4×2/3÷2
=1/6+1/2÷2
=1/6+1/4
=2/12+3/12
=5/12
(3.)
4/25÷【(2/5+1/3)×9/11】
=4/25÷【(6/15+5/15)×9/11】
=4/25÷【(11/15)×9/11】
=4/25÷(3/5)
=4/25x5/3
=4/15
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询