02-02-2018
Mathematics

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The sum of the equations -8x - 2y = 54 and 4x + 10y = 10 is an equation in one variable.

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wolf1728 wolf1728

02-02-2018

Multiplying first equation by .5:
A) -4x -y = 27 then adding equation B)
B) 4x + 10y = 10
9y = 37
y = 4.1111111111

x =
-4x - 4.1111111111 = 27
-4x = 31.1111111111
x = -7.7777777778

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