Heritierwakilongo Heritierwakilongo
  • 13-11-2019
  • Mathematics
contestada

15. x - y = 4
2x+y=5​

Respuesta :

alice184 alice184
  • 13-11-2019

Answer:

x = 3, y = -1

Step-by-step explanation:

1) x - y = 4

2x + y = 5

2) 3x = 9

3) x = 3 (9/3)

4) 3 - y = 4

(x - y = 4)

5) -y = 1 (4-3)

6) y = -1

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