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x in (-oo:+oo)
147 = (1/3)*(x-25) // - (1/3)*(x-25)
147-((1/3)*(x-25)) = 0
(-1/3)*(x-25)+147 = 0
147-1/3*(x-25) = 0
147-1/3*(x-25) = 0
466/3-1/3*x = 0
466/3-1/3*x = 0
466/3-1/3*x = 0 // - 466/3
-1/3*x = -466/3 // : -1/3
x = -466/3/(-1/3)
x = 466
x = 466
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