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{380+[500-(a×9-395)]}÷6=97



Răspuns :

380+[500-(a*9-395)] = 97*6
380+[500-(a*9-395)] = 582
500-(a*9-395) = 582-380
500-(a*9-395) = 202
500-202 = a*9-395
298 = a*9-395
298+395 = a*9
693 = a*9
a = 693:9
a = 77