Question

Efectuați 1 plus (2plus [3 ori (4plus 5) minus 6 plus 78] minus 9)
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Answer 1

1+{2+[3×(4+5)-6+78]-9}

1+[2+(3×9-6+78)-9]

1+[2+(27-6+78)-9]

1+(2+99-9)

1+92=93