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a fost răspuns

7*{124-5*[210-n*(23*17-24*120]}=728

va rog frumos rapid si explicat

Răspuns :

7*{124-5*[210-n*(23*17-24*120)]}=728  

7x{124-5x[210-nx(391-2880)]}=728  

7x{124-5x[210-nx(-2489)]}=728  

7x[124-5x(210+nx2489)]=728

124-1050-12445xn=728:7

-926-12445xn=104

-926-104=12445xn

-1030=12445xn

n= -1030/12445


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