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[(248:8-21*1):10+(500:50+800:10)​

Răspuns :

Răspuns:

(248 :8 - 21×1) :10 +(500 :50 +800 :10) =

(31 - 21) :10 +(10 +80) =

10 :10 +90 =

1 +90 =

91