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Simplifying f(g(x)) = x + 6 Multiply g * x f(gx) = x + 6 Multiply f * gx fgx = x + 6 Reorder the terms: fgx = 6 + x Solving fgx = 6 + x Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'gx'. f = 6g-1x-1 + g-1 Simplifying f = 6g-1x-1 + g-1 Reorder the terms: f = g-1 + 6g-1x-1
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