Question

СРОЧНО, даю 40 балів. ​

Answer 1

Ответ:

1.

6x+x+1=15

x=2

y=2+1

y=3

(x,y) = (2,3)

{3=2+1

{6x2+3=15

{3=3

{15=15

(х,у)(2,3)

2.

{x=2+3y

{x+4y=23

2+3y+4y=23

y=3

X=2+3x3

x=11

(x, y) = (11, 3)

{11-3х3=2

{11+4*3=23

{2=2

{23=23

(х,у)(11,13)

3.

{х=3-(2/5)у

{8x+3y=-1

8(3-(2/5)у)+3у=-1

y=125

x=3-2/5*125

x=-47

(x, y) (-47,125)

{5x-47 +2x125=15

{8× - 47+3x125=-1

{15=15

{-1=-1

(x, y) = (-47,125)