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afla numaru necunoscut mergand invers
1+1X{1+1X[1+a(1+1)+1]+1}+1=8


Răspuns :

8-1=7-1=6:1=6-1=5-1=4:1=4-1=3
1+a(1+1)=3
3-1=2
a*2=2
a=2:2
a=1