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(24+25-25:5×5:1):a=6×9-7×7+3

Răspuns :

(24+25-25:5x5:1):a=6x9-7x7+3=
(24+25-5x5:1):a=6x9-7x7+3=
(24+25-25:1):a=6x9-7x7+3=
(24+25-25):a=6x9-7x7+3=
24:a=6x9-7x7+3=
24:a=54-7x7+3=
24:a=54-49+3=
24:a=5+3=8
24:a=8
a=24:8
a=3
Verificare:
24:3=8
R:a=3