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23-10-2017
Mathematics

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What is the value of y in the solution to the system of equations?x + y = 12x – 3y = –30

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isaactillman05ouqokr isaactillman05ouqokr

23-10-2017

x + y = 12 . . . . . . . . (1)
x - 3y = -30 . . . . . . . (2)
(1) - (2): 4y = 42
y = 10.5

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