dririri dririri
  • 24-01-2020
  • Mathematics
contestada

2x + 5y = 26
-3x - 4y = -25.

Respuesta :

Yang100
Yang100 Yang100
  • 24-01-2020

Answer:

x=3, y=4. (3, 4).

Step-by-step explanation:

2x+5y=26

-3x-4y=-25

-----------------

3(2x+5y)=3(26)

2(-3x-4y)=2(-25)

-----------------------

6x+15y=78

-6x-8y=-50

------------------

7y=28

y=28/7=4

2x+5(4)=26

2x+20=26

2x=26-20

2x=6

x=6/2

x=3

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