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14-12-2020
Mathematics

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solve the system by substitution
y=5x
y=9x+8

show ur work
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Respuesta :

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14-12-2020

Answer:

x = -2

y = -10

( -2, -10)

Step-by-step explanation:

set them equal

5x = 9x + 8

subtract 9x

-4x = 8

divide by -4

x = -2

plug in x

y = 5(-2)

y = -10

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