israelmunoz011 israelmunoz011

08-10-2020
Mathematics

contestada

-3x-7y = 18
9x+2y = 3

Respuesta :

samkr14 samkr14

08-10-2020

Answer:

x = -13

y = 3

Step-by-step explanation:

-3x-7y = 18

9x + 2y = 3

__________

3(-3x-7y=18)

9x + 2y = 3

__________

-9x - 21y = 54

9x + 2y = 3

__________

-19y = 57

y = 3

-3x - 7(3) = 18

-3x - 21 = 18

-3x = 39

x = -13

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