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

4X=243-1.6X
5.6X=243
X=43.4
4x-8+20x-4=5-10x
34X=17
X=0.5