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Va rog imi puteti spune veluare lui y ?? Va rog !
15:{15:[15:(y:15+2)-2]-2-}+2=7


Răspuns :

15:{15:[15:(y:15+2)-2]-2}+2=7
15:15:[15:(y:15+2)-2]-2=7-2
15:15:[15:(y:15+2)-2]-2=5
15:15:15:(y:15+2)-2=5+2
15:15:15:(y:15+2)-2=7
15:15:15:(y:15+2)=7+2
15:15:15:(y:15+2)=9
15:15:a=9
15:a=15×9
15:a=135
a=135:15
=>a=9
y:15+2=9
y:15=9-2
y:15=7
y=15×7
=>y=105