y=(x+9)/2

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Solution for y=(x+9)/2 equation: 


x in (-oo:+oo)

y = (x+9)/2 // - (x+9)/2

y-((x+9)/2) = 0

(-1*(x+9))/2+y = 0

(-1*(x+9))/2+(2*y)/2 = 0

2*y-1*(x+9) = 0

2*y-x-9 = 0

(2*y-x-9)/2 = 0

(2*y-x-9)/2 = 0 // * 2

2*y-x-9 = 0

2*y-x-9 = 0 // - 2*y-9

-x = -(2*y-9) // * -1

x = 2*y-9

x = 2*y-9

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