• to do a sum, to solve a problem
• accomplishment, answer, clearing up, expedient, key, resolving, resort, settling, solution, solving, tackling, unravelling
• to unravel, to work out
• solubility, solvability
• inextricable, insolvable
• loosening, unbinding, undoing, unfastening, untying
• to get a solution to sg
• deadlock, impasse, logjam
• inextricable difficulties