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a fost răspuns

Aflal pe a
546+127-96:3+73x2-(62:a+24:2)-5x11=689

Răspuns :

546+127-32+146-(62:a+12)-55=689
787-(62:a+12)-55=689
732-(62:a+12)=689
-(62:a+12)=-43   |×(-1)
62:a=31
a=62:31
a=2