4/(x+5)+1/(y-2)=4 1)
2/(x+5)-1/(y-2)=8 2)
1)+2)得
4/(X+5)+2/(X+5)=12
X+5=1/2
X=-9/2
1)-2)×2得
1/(Y-2)+2/(Y-2)=4-16
Y-2=-1/4
Y=7/4
4/(x+5)+1/(y-2)=4 1)
2/(x+5)-1/(y-2)=8 2)
1)+2)得
4/(X+5)+2/(X+5)=12
X+5=1/2
X=-9/2
1)-2)×2得
1/(Y-2)+2/(Y-2)=4-16
Y-2=-1/4
Y=7/4