(1+x)/(x-3)=3
1+x=3(x-3)
1+x=3x-9
1+9=3x-x
x=5
猜你喜欢
- 1如图所示,物体A重240N,动滑轮重60N,用力F将物体以1m/s的速度匀速竖直提升,若不计绳的重和摩擦,拉力F的大小是_ N,经历1s时间,拉力F做的功为_ J,功率是_ W,该装置的机械效率是_.
- 2I think---- good -----English every morning
- 3描写心里很急的词语
- 4化学方程式配平 Fe3C+HNO3-Fe(NO3)3+CO2+NO2+H2O
- 5tom gets up early ,and t_____he eats a good breakfast
- 6I like to be in different a______and meet different people.
- 7看小强了一本250页的故事书,第一天看了若干页,第二天看了64页两天共看了这本书的60%.第一天看了这本书的百分之几
- 8乙数的5分之1与甲数相等,是把( )看作单位“1”,数量关系式:( )乘以5分之1等于( )
- 9There are three kinds of goals:short-term,medium-range and long-term goals.Short-term goals are those that usually deal
- 10阅读理解《品茶》 如何理解文章开头所说:“茶,是最朴素、淡泊的美物.饮茶 ,是最朴素、淡泊的美事.