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15+5x{5+5:[45:5-(36:a+4x1)]+6x0}=65

Răspuns :

Tinaoala2810
5×{5+5:[45:5-(36:a+4×1)]+0}=65-15
5×(5+5:(9-(36:a+4)))=40
5+5:(9-(36:a+4))=40-5
5:(9-(36:a+4))=35-5
9-(36:a+4)=30-5
-(36:a+4)=25-9
-36:(-a)-4=16
-36:(-a)=16+4
-a=20+36
a= -56

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