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1488-7:[6-5·(32:8-4:n)+1]-6-1288=193

Răspuns :

1488-7:[6-5·(32:8-4:n)+1]-6-1288=193
194-7:[7-5·(4-4:n)]=193
-7:[7-5·(4-4:n)]=193-194
7:[7-5·(4-4:n)]=1
7-5·(4-4:n)=7
-5·(4-4:n)=7-7
5·(4-4:n)=0
4-4:n=0
4:n=4
n=1