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2014-11-10T19:23:35+02:00
[(x+174:3)x3+4]x11=1991  
[(x+58)x3+4]=1991:11       
(x+58)x3=181-4               
x+58=177:3
x=59-58
x=1


2014-11-10T19:24:19+02:00