X=8
X=14
X=1.5
X=13/15
1`x+5/13=12
x=12-5/13
x=11又2/5
2`x-5/12=3/4
x=5/12+4/12
x=5/12+9/12
x=14/12
3`怎么有两个等号?
4`8/15-x=1/3
x=8/15-1/3
x=8/15-5/15
x=3/15
x=1/5
151/13,251/43,.....,1/5