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02-12-2019
Mathematics

contestada

4x + y =6
-5x - y = 21

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02-12-2019

Answer:

Step-by-step explanation:

Adding equation 1 and 2 we have

-x=27

Therefore x= -27

Substituting the value of x into equation 2 we have

-108+y = 6

y = 114

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