Question

Resolver por metodo de sustitucion:
2x+y=6
5x-2y=-3

m-n=6
2n-3m=-13

x+3y=20
2x-3y=4

x-y=1
x-2y=0

2x-y=7
4x+3y=9

3y+7=20x
8y=12x+2

y=2x+4 sobre 2
4y-x=14

5x2y=4
3x+y=9

ayuden ...graciias

Answer 1

Respuesta:

1.{x + y = 4

-x + y = 4

2.{2x - 3y = 9

4x + 3y = 9

3.{x + 3y = 5

2x -y = 3

4.{-x + y = 2

4x - 3y = -3

5.{x + 2y = 7

5x - y = 2

6.{x - y = 3

x + 3y = 7

7.{3x + 2y = 0

-x - 2y = 8

8.{x + y = 7

2x - 3y = -1

9.{4x - 3y = 28

9x - y = -6

10.{-4x + 12y = 0 1

2x + 4y = 160

corona plis