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(f o g) (x) = f ( g(x) )
= f ( (x - 1)/(2 - x) )
= 3 {(x - 1) / (2 - x) } - 5
= (3x - 3) / (2 - x) - 5
= {(3x - 3) - 5(2 - x) } / (2 - x)
= (3x - 3 - 10 + 5x) / (2 - x)
= (8x - 13) / (2 - x)