是解决问题还是计算题
2/3X+1/6X=1/4
4/6X+1/6X=1/4
5/6X=1/4
X=1/4×6/5
X=3/10
X-1/9=5/12
X=5/12+1/9
X=15/36+4/36
X=19/36
3/5X+20=50
3/5X=50-20
X=30×5/3
X=100
http://wenku.baidu.com/view/bd775836b90d6c85ec3ac668.html 去这看看吧
是解决问题还是计算题
2/3X+1/6X=1/4
4/6X+1/6X=1/4
5/6X=1/4
X=1/4×6/5
X=3/10
X-1/9=5/12
X=5/12+1/9
X=15/36+4/36
X=19/36
3/5X+20=50
3/5X=50-20
X=30×5/3
X=100
http://wenku.baidu.com/view/bd775836b90d6c85ec3ac668.html 去这看看吧