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24-04-2018
Mathematics

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solve the linear system: x+y=-3;y=2x

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mathecoach mathecoach

06-01-2019

Answer:

I. x + y = -3 --> y = -x - 3

II. y = 2x

2x = -x - 3

3x = - 3

x = -1

y = 2*(-1) = -2

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