Kabadnac
Kabadnac Kabadnac
  • 25-11-2021
  • Mathematics
contestada

2x+5y=25 3x-y=12 con metodo de sustitución​

Respuesta :

clarch19
clarch19 clarch19
  • 25-11-2021

Answer:

x = 5, y = 3

Step-by-step explanation:

2x + 5y = 25

3x - 1y = 12

we can multiply the second equation by 5 and then add it to the first equation, which will allow us to solve for 'x'; then we solve for 'y'

5(3x - 1y) = 12(5)

15x - 5y = 60

   2x + 5y = 25

+  15x - 5y = 60

17x = 85

x = 5

plug '5' in for 'x' to solve for 'y':

2(5) + 5y = 25

10 + 5y = 25

5y = 15

y = 3

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