求未知数x,4x=243-1点6x 4x-8+20x-4=5-10x
问题描述:
求未知数x,4x=243-1点6x 4x-8+20x-4=5-10x
答
4X=243-1.6X
5.6X=243
X=43.4
4x-8+20x-4=5-10x
34X=17
X=0.5