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[120-(4x20)x3:(54:9 )]:8=
2.[38+(106-88):9]:(56:7)=


Răspuns :

2X[38+18:9]:8=
2X[38+2]:8=2X40:8=
                   80:8=
                    10
(120 - 80*3 / 6) / 8 = 
(120 - 240 / 6) /8 =
(120 - 40) / 8 =
80/8 = 10

(38 +  18/9) / 8 =
(38 + 2) / 8 =
40 / 8 = 5