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25-05-2017
Mathematics

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-2x + 3y=-1 2x + 5y=25 elimination

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Аноним Аноним

25-05-2017

-2x + 3y=-1
2x + 5y=25
------------------add
8y = 24
y = 3

-2x + 3y =-1
-2x + 3(3) =-1
-2x + 9 = -1
-2x = -10
x = 2

answer
x = 2 and y = 3 or (2,3)

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