y=7-1/2x

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Solution for y=7-1/2x equation: 


x in (-oo:+oo)

y = 7-((1/2)*x) // - 7-((1/2)*x)

(1/2)*x+y-7 = 0

1/2*x+y-7 = 0 // - y-7

1/2*x = -(y-7) // : 1/2

x = (-(y-7))/1/2

x = 2*(7-y)

x = 2*(7-y)

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