Respuesta :

solidasjilliane

Answer:

One

Explanation:

3

y

=

18

x

+

21

XXX

⇔

y

=

6

x

+

7

5

y

+

55

=

30

x

XXX

⇔

y

=

6

x

−

11

both equations are linear and they are not co-linear

therefore there is exactly 1 solutio

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