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2011*3211-3211+2010*1789

Răspuns :

2011x3211-3211+2010x1789==>2011x3211-3211=2010x3211
2010x3211+ 2010x1789=
Scoatem factor comun pe 2010
2010x(3211+1789)=
2010x    4990       = 1029900

2011X3211-3211+2010X1789=
6457321-3211+3595890=
6454110+3595890=
10050000