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afla nr necunoscut :4532:[72*5+(9348:4-n)]=2

Răspuns :

4532:[72x5+(9345:4-n)]=2
72x5+(9348:4-n)=4532:2=2266
360+(2337-n)=2266
2337-n=2266-360
2337-n=1906
n=2337-1906
n=431
4532:[72x5+2337-n]=2
4532:(360+2337-n)=2
2697-n=4532:2
2697-n=2266
n=2697-2266
n=431