2X+3=X-1

问题描述:

2X+3=X-1

2X+3-X=-1
X+3=-1
X=-1-3
X=-4

2x+3=x-1
x+3=-1
x=-4

2X+3=X-1
2x-x=-1-3
x=-4

2X-X=-1-3
X=-4