2) {6x+2y=0 {-5x+y=8 4) {8x-3y=6 {2x-y=0

Question

2) {6x+2y=0 {-5x+y=8 4) {8x-3y=6 {2x-y=0

Answer 1

1) {

 

  Ответ \left \{ {{y=3} \atop {x=-1}} \right. [/tex]

 

 2)

 

Answer 2

2)6x+2y=0

y=8+5x

 

6x+2(8+5x)=0

y=8+5x

 

6x+16+10x=0

16x=16

x=1

y=8+5x=8+5*1=13

 

4)8x-3y=6

y=2x

 

8x-3(2x)=6

8x-6x=6

2x=6

x=3

y=2x=2*3=6