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[(6+6×9-88:8)-(3×7+5-63:3)-4]:4 va rooog

Răspuns :

[(6+54-11)-(21+5-21)-4]:4=
(49-5-4):4=
40:4=
10
[(6+54-11)-(21+5-21)-4]:4=
[(49-5)-4]:4=
(44-4):4=
40:4=
10