23-03-2019
Mathematics

contestada

{-4x + 4y = -8
{ x - 4y = -7

Respuesta :

23-03-2019

I assume you're doing elimination, so

The + 4y and - 4y would cancel out, giving you:

-4x = -8

x = -7

Then, you subtract the x values and add the -8 and -7

-3x = -15

Your answer will be

*x = 5

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