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05-02-2021
Mathematics

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solve using substitution method

X-7y=10 X=2y

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Аноним Аноним

05-02-2021

Answer: (-4,-2)

(2y)-7y=10

-5y=10

y=-2

X=2(-2)

X=-4

(-4)-7(-2)=10

-4+14=10

10=10

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