Where the solute is broke (9)

I believe the answer is:

insolvent

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'is broke' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for insolvent that I've seen before include "without the means to pay" , "Broke" , "gone to the wall" , "Unable to pay debts owed" , "on the rocks" .)

I've seen this clue in the Sydney Morning Herald.

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