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17-02-2020
Mathematics

contestada

18x +8y = -10
9x -4y = -13
elimination method

Respuesta :

s9086665 s9086665

17-02-2020

Answer:

9x+4y= -23

Step-by-step explanation:

18x - 9x = 9x

8y-4y = 4y

-10-13= -23

put everything back together

9x+4y= - 23

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