3/x+3=4
问题描述:
3/x+3=4
2/x-1=3/x+1
答
3/x+3=4
3/x=4-3
3/x=1
x=3
2/x-1=3/x+1
2-x=3+x
x+x=2-3
2x=-1
x=-1/2