Question

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

Answer 1

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