11/9-(1/8+2/9)等于多少脱式计算?
1个回答
展开全部
(1)40/13×(13/40×27)
=40/13×13/40×27
=1×27
=27
(2)(8/9+4/7)÷4/7
=8/9÷4/7+4/7÷4/7
=14/9+1
=2又5/9
(3)2/7×5/9+4/7×2/9
=2/7×5/9+2/7×4/9
=2/7×(5/9+4/9)
=2/7×1
=2/7
(4)6/7+5/9×3/2+1/6
=6/7+5/6+1/6
=6/7+(5/6+1/6)
=1又6/7
(求未知数x的值)
(1)x-25%x=24
解:75%x=24
x=24÷75%
x=32
(2)11/12÷x等于11/18
解:x=11/12÷11/18
x=1又1/2
(3)1/
=40/13×13/40×27
=1×27
=27
(2)(8/9+4/7)÷4/7
=8/9÷4/7+4/7÷4/7
=14/9+1
=2又5/9
(3)2/7×5/9+4/7×2/9
=2/7×5/9+2/7×4/9
=2/7×(5/9+4/9)
=2/7×1
=2/7
(4)6/7+5/9×3/2+1/6
=6/7+5/6+1/6
=6/7+(5/6+1/6)
=1又6/7
(求未知数x的值)
(1)x-25%x=24
解:75%x=24
x=24÷75%
x=32
(2)11/12÷x等于11/18
解:x=11/12÷11/18
x=1又1/2
(3)1/
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