6x+11=1-5x
6x +5x=1-11
11x =-10
x=-10/111-(y/2)=y-(1/3)负五分之二y-一又三分之一=五分之七y+二分之三y+y/2=1+1/3 3/2y=3/4y=1/2-2/5y-1 又1/3 =7/5y + 3/2 7/5y +2/5y=-1又1/3-3/2 9/5y=-17/6 y=-85/54