Question

x^2+xy=6x
x^2+y^2=3(x+y)

Answer 1

x=4+y

(4+y)^2+y(4+y)=6 

 

x=4+y

16+8y+y^2+4y+y^2=6

 

x=6+y

2y^2+12y+10=0 I:2

 

x=6+y

y^2+6y+5=0

 

 x=6+y

y=1 и y=-5

 

x=7 и x=1 

y=1 и y=-5 

Answer 2

x=6-y

Answer 3

2(3-y)^2=0

Answer 4

0;0

Answer 5

0;3

Answer 6

3;3