1/8[1/8[1/4[[x-1]/2+3]]+5+7]=1
1/8[1/4[[x-1]/2+3]]+12=8
1/8[1/4[[x-1]/2+3]]=-4
1/4[[x-1]/2+3]=-32
[x-1]/2+3=-128
[x-1]/2=-131
x-1=-262
x=-261