30-10-2016
Mathematics

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Y=4x. 3x-y=1 how to get the y value

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PhantomRealm PhantomRealm

30-10-2016

since y=4x
substitute 4x into the second equation
3x-4x=1
-x=1
x=-1
if x=-1, substitute x=-1 in the equ 1
y=4x
y=4(-1)
y=-4

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