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8×a=474-(350+164):9 aflați necunoscuta

Răspuns :

8 × a = 474 - ( 350 + 164 ) : 9

8 × a = 474 - 514 : 9

8 × a = 474 - 57, ( 1 )

8 × a = 416, ( 8 )

a = 416, ( 8 ) : 8

a = 52, ( 1 )