Răspuns:
(1259:2-a-67):12=3
(629,5-a-67):12=3
629,5-67-a=36
562,5-a=36
a=562,5-36=526,5
[1259÷2-a-67]÷12=3
[629-a-67]÷12=3
562÷12=3
46÷12=3
sper ca te am ajutat
