



 
Emma, There is, as far as I know, no algorithm that solves all problems like this without some trial and error, so don't feel bad! Try each operation in turn and try making it the last step; you then get an easier problem on each side. But with five numbers, one side has 1 or 2 of them so it's unambiguous  so you have only one simpler problem. [...] means parentheses are still undecided. EG: 39  [4+6/3^{2}] = 3 so [4+6/3^{2}] = 36 Good Hunting!
Emma, Try to make 39  36, using the fact that 36 is a square. Claude  


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