1

SISTEMAS DE ECUACIONES

1. 5x – 2y = 4 6x – 3y = 3 R; x = 2, y = 3

2. 3x + 4y =15 6x + 5y = 21 R; x = 1, y = 3

3. 7x – 3y = 29 8x + 4y = 48 R; x = 5, y = 2

4. 5x – 3y = 7 7x + 2y = 16 R; x = 2 y = 1

5. 8x + 2y = 10 9x – 3y = 6 R; x = 1 y = 1

6. 5x – 2y = 4 6x – 3y = 3 R; x = 2, y = 3

7. 3x + 4y =15 6x + 5y = 21 R; x = 1, y = 3

8. 7x – 3y = 29 8x + 4y = 48 R; x = 5, y = 2

9. 5x – 3y = 7 7x + 2y = 16 R; x = 2 y = 1

10. 8x + 2y = 10 9x – 3y = 6 R; x = 1 y = 1

11. 5x – 2y = 4 6x – 3y = 3 R; x = 2, y = 3

12. 3x + 4y =15 6x + 5y = 21 R; x = 1, y = 3

13. 7x – 3y = 29 8x + 4y = 48 R; x = 5, y = 2

14. 5x – 3y = 7 7x + 2y = 16 R; x = 2 y = 1

15. 8x + 2y = 10 9x – 3y = 6 R; x = 1 y = 1

2

Sistemas con denominadores

84

5

2

3=+

yx x = 2

182

6

3

9==

yx y = 4

2

23

3

4

2

3=+

yx x = 5

2

23

2

6

4

2=+

yx y = 3

2

13

8

5

4

7=−

yx x = 3

12

55

6

5

4

3 −=+

− yx x = 5

163

6

2

8=−

yx y =-2 8

3

6

4

8=+

yx y = -1

193

12

4

6=+

yx x = 2 5

4

3

3

2=+

yx x = 3

5

4

10

5

5

7=−

yx y = 4 3

23

5=−

yx y = 4