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10-01-2021
Mathematics

contestada

y = −3x
4x + y = 2
------------------
y = 7x − 5
2x + y = 13

Respuesta :

10-01-2021

Answer:

4x+(-3x) = 2

4x - 3x = 2

x = 2

_________

2x + 7x - 5 = 13

9x = 13 + 5

9x = 18

x = 18 / 9

x = 2

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