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7 · { 2 + 6 ·[ 20 - 3 · ( 11 · 3 - 27 ] } + x = 2109

Răspuns :

11*3=33-27=6
3*6=18
20-18=2
6*2=12+2=14
14*7=98
98+x=2109
X=2109-98
X=2011
7•{2+6•[20-3•(33-27)]}+X=2109; 7•[2+6•(20-3•6)]+X=2109; 7•[2+6•(20-18)]+X=2109; 7•(2+6•2)+X=2109; 7•(2+12)+X=2109; 7•14+X=2109; 98+X=2109; X=2109-98; X=2011. Sper ca te-am ajutat