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Jacotabianca
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[32*18-10*(105-54:a)]:11-36:9+40:8=7
Pas cu pas va rog urgent

Răspuns :

(576-10(105-54/a))/11-4+5=7
(576-1050+54/a)/ 11-1=7
(576-1050a+54)/ 11-1=7
576+54 -1050/a)/11-1=7
(630- 1050/a)/11-1=7
(630a-1050)/11-1=7
630a-1049/11=7
630a-1049=77
a=77+1049/630

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