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1) 1+1-2+9•9-55+6666​

Răspuns :

1 + 1 - 2 + 9 × 9 - 55 + 6.666 =

2 - 2 + 81 - 55 + 6.666 =

0 + 81 - 55 + 6.666 =

81 - 55 + 6.666 =

26 + 6.666 = 6.692