Input:
solve(abs(x-1)+abs(x-2)=3)
Write:
`solve(abs(x-1)+abs(x-2)=3)`
Output:
$$solve(abs(x - 1)+abs(x - 2)=3)== f^{-1}(abs(-1+3 - abs(-2+3)),3 - abs(-2+3))$$
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