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32;8+3(60+8x(360;a-72;4))=712

Răspuns :

4+3[60+8(360:a-18)]=712
3[60+8(360:a-18)]=712-4
60+8(360:a-18)=708:3
8(360:a-18)=236-60
360:a-18=176:8
360:a=22+18
a=360:40
a=9