2+1/2x=y - solution

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Solution for 2+1/2x=y equation:

x in (-oo:+oo)

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

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

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

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

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

x = 2*(y-2)

x = 2*(y-2)

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