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20-11-2020
Mathematics

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How many solutions does this system have?

y =-3x. -9x-4y=21
one
two
an infinite number
no solution

Respuesta :

24isaacalva 24isaacalva

20-11-2020

Answer:

one or seven READ DESCRIPTION

Step-by-step explanation:

y =-3x. -9x-4y=21

-9x+12x=21

3x=21

3*7=21

if you didn't mean to do a double negative then it would be one, but otherwise it's seven

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