明朝服饰和韩国:帮忙解一下算式

来源:百度文库 编辑:查人人中国名人网 时间:2024/05/02 19:17:37
3/4X-(4/5X-3)=1

3/4X-(4/5X-3)=1
解:原式可化简为
3/4x - 4/5x + 3 = 1
3/4x - 4/5x = - 2
两边同时乘以4和5的最小公倍数20得:
15x - 16x = - 40
- x = - 40
x = 40

解:3/4X-4/5X+3=1
3/4X-4/5X=-2
-0.05X=-2
X=40

3/4X-4/5X+3=1
3/4X-4/5X=-2
-0.05X=-2
X=40

原式=3/4x-4/5+3=1
-1/20x=-2
x=40

x=40

x=4