y=4-2/5x

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Solution for y=4-2/5x equation: 


x in (-oo:+oo)

y = 4-((2/5)*x) // - 4-((2/5)*x)

(2/5)*x+y-4 = 0

2/5*x+y-4 = 0 // - y-4

2/5*x = -(y-4) // : 2/5

x = (-(y-4))/2/5

x = 5/2*(4-y)

x = 5/2*(4-y)

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