x²+y²-2x+6y+10=0
(x²-2x+1)+(y²+6y+9)=0
(x-1)²+(y+3)²=0
x-1=0,y+3=0
x=1,y=-3
(3x+7)/3y
=(3×1+7)/(3×3)
=10/9
明白请采纳,
有新问题请求助,