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12x=(x-4)*12*3
12x=36(x-4)
12x=36x-144
-24x=-144
24x=144
x=144/24
x=6
Odp Dziewczyn było 6.
x - 12 talarów
x-4 - 36 talarów
12x=(x-4)*36
12x=36x-144
12x - 36x = -144 / * (-1)
24x=144
x=6
odpowiedź : 6 dzieweczek przędło niteczki
12x = (x-4) * 36
12x = 36x - 144
12x - 36x = -144
-24x = -144/(-24)
x = 6