5x+1(10-x)=4.2怎么解?
问题描述:
5x+1(10-x)=4.2怎么解?
答
5x+10-x=4.2
4x=-5.8
x=-1.45
5x+1(10-x)=4.2怎么解?
5x+10-x=4.2
4x=-5.8
x=-1.45