解方程和怎样算简便就怎样算.解方程.18
1个回答
展开全部
解方程和怎样算简便就怎样算.
解方程
18-150%x=5.5
18-1.5x=5.5
-1.5x=5.5-18
-1.5x=-12.5
x=18.75
1.5x-35%x=9.2
1.5x-0.35x=9.2
1.15x=9.2
x=8
x÷(1-15%)=17
x÷(1-0.15)=17
x÷0.85=17
x=14.45
380%-一又七分之三-七分之四
=3.8-10/7-4/7
=3.8-2
=1.8
11/4÷5/3÷2.75
=11/4*3/5*11/4
=3/5
(6.7×60%+3.3×60%)÷1/4
=[0.6*(6.7+3.3)]÷1/4
=6÷1/4
=24
10×(8/5-3/8÷355%)
=10×(8/5-3/8÷3.55)
7/10+(4/7+1/2)×7/25
=7/10+4/7×7/25+1/2×7/25
=7/10+3/10
=1
[1-(1/4+3/8)]÷1/4
=(1-5/8)÷1/4
=3/8*4
=3/2
37×13/38
=(38-1)×13/38
=38×13/38-13/38
=13-13/38
=12又25/38
解方程
18-150%x=5.5
18-1.5x=5.5
-1.5x=5.5-18
-1.5x=-12.5
x=18.75
1.5x-35%x=9.2
1.5x-0.35x=9.2
1.15x=9.2
x=8
x÷(1-15%)=17
x÷(1-0.15)=17
x÷0.85=17
x=14.45
380%-一又七分之三-七分之四
=3.8-10/7-4/7
=3.8-2
=1.8
11/4÷5/3÷2.75
=11/4*3/5*11/4
=3/5
(6.7×60%+3.3×60%)÷1/4
=[0.6*(6.7+3.3)]÷1/4
=6÷1/4
=24
10×(8/5-3/8÷355%)
=10×(8/5-3/8÷3.55)
7/10+(4/7+1/2)×7/25
=7/10+4/7×7/25+1/2×7/25
=7/10+3/10
=1
[1-(1/4+3/8)]÷1/4
=(1-5/8)÷1/4
=3/8*4
=3/2
37×13/38
=(38-1)×13/38
=38×13/38-13/38
=13-13/38
=12又25/38
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
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