2x-1=4x+3 4-3x=2x-1 1.89x=1-0.11x
问题描述:
2x-1=4x+3 4-3x=2x-1 1.89x=1-0.11x
答
(1+3)=1/4
1/(1+4)=1/5
答
2x-1=4x+3
4x-2x=-1-3
2x=-4
x=-2
4-3x=2x-1
3x+2x=4+1
5x=5
x=1
1.89x=1-0.11x
1.89x+0.11x=1
2x=1
x=1/2